collection of pus underneath a portion of the skin. Bacteria commonly causing
abscesses are Staphylococcus aureus and Streptococcus. These bacteria enter the
skin through any cracks or injury to the skin.
Nigricans
characterized by abnormal thickening and darkening of the skin, especially in
body creases. It is most commonly associated with obesity or polycystic ovarian
disease in women; though it can occasionally be found in people who have more
serious underlying health problems or who are taking certain medications.
Vulgaris)
to be caused by multiple factors. Overproduction of a normal oil on the skin,
called sebum, increases under the influence of hormones. This, coupled with
insufficient shedding of exfoliating dead skin cells, plugs hair follicles.
results when acne lesions are compulsively squeezed and scratched, resulting in
scabs and scars. It is seen most commonly in adolescent girls and has been
thought to be associated with underlying depression, anxiety, or
emotional problems.
Keloidalis Nuchae
folliculitis or nuchal keloidal acne, is a chronic skin condition characterized
by inflamed bumps and scars on the back of the neck. Although it is not related
to common acne (acne vulgaris), acne keloidalis nuchae initially appears as
acne-like lesions of inflamed hair follicles (folliculitis) on the nape of the
neck (nuchal area) and, without treatment, can result in large scars (keloids).
to be caused by multiple factors. Overproduction of a normal oil on the skin,
called sebum, increases under the influence of hormones. This, coupled with
insufficient shedding of exfoliating dead skin cells, plugs hair follicles.
(Skin Tag)
inherited condition that manifests as small, flesh-colored growths on a thin
stalk. Skin tags are benign lesions that can sometimes become irritated or
traumatized.
Cheilitis
lip" or "sailor's lip," is a precancerous condition related to cumulative
lifetime sun exposure. The lower lip is most often affected. Individuals with
actinic cheilitis often present with complaints of persistent dryness and
cracking of the lips.
Keratosis)
keratoses, are small rough or scaly areas of skin due to damage from sun
exposure. Some actinic keratoses can turn into squamous cell skin cancer, so it
is important to perform self-examinations often and catch them early.
Contact Dermatitis
hypersensitivity reaction (the reaction to the allergen occurs 48–72 hours after
exposure). The most common allergens causing allergic contact dermatitis appear
to be nickel, chromates, rubber chemicals, and neomycin (an antibacterial).
(Pediatric)
substance (the allergen) touching the skin. The reaction occurs 48–72 hours
after exposure. Common allergens are nickel, chromates, rubber chemicals, and
neomycin (an antibacterial medication).
Areata
resulting in hair loss. The immune system of the body mistakenly stops hair
growth for unknown reasons.
Female Pattern
hair loss affecting women due to an inherited susceptibility. It is most
commonly noticed after menopause, although it may begin earlier.
Male Pattern
androgenetic alopecia, is the patterned balding of a man. Although the condition
may affect both the appearance and self-esteem of some men, one should note that
the condition is not a medical disorder.
Cheilitis
inflammatory condition of the corners of the mouth. Usually associated with a
fungal (Candidal) or bacterial (Staphylococcal) infection, those
affected may also have thrush (oral candidiasis).
Foot (Tinea Pedis)
or athlete's foot, is a surface (superficial) fungal infection of the skin of
the foot. The most common fungal disease in humans, athlete's foot, may be
passed to humans by direct contact with infected people, infected animals,
contaminated objects (such as towels or locker room floors), or the soil.
cell epithelioma, is the most common form of skin cancer. Basal cell carcinoma
usually occurs on sun-damaged skin, especially in light-skinned individuals with
a long history of chronic sun exposure.
depressions in the nail plate that run parallel to the shape of the white,
moon-shaped portion of the nail bed (lunula) seen at the nail's origin. They
result from a sudden interruption of nail keratin synthesis and grow distally
with the nail plate.
(Decubitus Ulcer)
pressure sores or ulcers, result from prolonged pressure that cuts off the blood
supply to the skin, causing the skin and other tissue to die.
Nevus)
that is present at birth or shortly thereafter. It is one common type of
birthmark, caused by a cluster of color (pigment) cells in the skin and
sometimes in deeper tissues.
Sting, Arthropod
very common. Most reactions are mild and result due to an allergic reaction to
either the insect or the toxins injected with the bite or sting.
(Pediatric)
very common. Most reactions are mild, and symptoms are caused by an allergic
reaction to either the insect or the irritating substances (toxins) the insect
makes and injects along with the bite or sting.
When it involves the outside front of the eyelid, where the eyelashes are
attached, it is called anterior blepharitis. If blepharitis involves the inner
eyelid, it is called posterior blepharitis.
(Furunculosis)
on the skin resulting from the deep infection of a hair follicle. The infection
is usually caused by a type of bacteria called Staphylococcus aureus
(staph).
Sting
very common. Most reactions are mild and result due to an allergic reaction to
either the insect or the toxins injected with the bite or sting.
(Pediatric)
very common. Most reactions are mild, and symptoms are caused by an allergic
reaction to either the insect or the irritating substances (toxins) the insect
makes and injects along with the bite or sting.
flat areas that are darker in color than the rest of the skin
(hyperpigmented). The term refers to their characteristic even (homogeneous)
color of "coffee with milk," which may be light to dark brown.
that occurs in response to excessive, repeated shear or friction forces,
commonly due to constant rubbing of the skin.
yeast infection, is an infection with the common yeast (or fungus) organism,
Candida albicans, which is commonly found in the
environment. Sometimes this yeast lives in the mouth, digestive
(gastrointestinal) tract, and the vagina, along with many kinds of harmless
bacteria, without causing any issues.
Dermatitis
normally found in the digestive (gastrointestinal) tract. If your baby is
wearing a moist or blocked up (occluded) diaper, particularly one that is dirty
(has fecal contamination), an inflammatory skin rash (dermatitis) may develop on
the baby's skin.
moniliasis, is a yeast infection of the mouth or throat (the oral cavity). The
yeast that most commonly causes oral candidiasis is Candida albicans.
(Aphthous Ulcer)
the most common cause of periodic (recurring) ulcers inside the mouth and
genital linings (mucous membrane surfaces). Their cause is unknown, but stress,
lack of sleep, trauma, and perhaps some vitamin deficiencies, toothpastes, and
foods can make the condition worse.
blood cells from small, superficial blood vessels that results in pinpoint-like
hemorrhages (petechiae). Capillaritis is frequently found in patients with long
periods of extended standing related to their occupations.
This clouding can cause a reduction in vision. The lens is composed of protein
and water structured to allow light to clearly pass through. Changes to the
structure of the protein result in a cataract. The changes in vision associated
with a cataract depend upon which part of the lens is affected.
tissue, which is most often caused by the bacteria Streptococcus or
Staphylococcus. These bacteria are able to invade the skin through small
cracks (fissures) in the skin, causing the sudden appearance of skin redness,
swelling, and the sensation of heat. Cellulitis is often accompanied by fever
and chills.
(Cheilitis)
dry, scaly, and may have one or more small cracks (fissures). Often, the lips
are sensitive, and there may or may not be redness (erythema) and swelling
(edema) present.
dry, scaly, and may have one or more small cracks (fissures). Often, the lips
are sensitive, and there may or may not be redness (erythema) and swelling
(edema) present.
Actinic
lip" or "sailor's lip," is a precancerous condition related to cumulative
lifetime sun exposure. The lower lip is most often affected. Individuals with
actinic cheilitis often present with complaints of persistent dryness and
cracking of the lips.
inflammatory condition of the corners of the mouth. Usually associated with a
fungal (Candidal) or bacterial (Staphylococcal) infection, those
affected may also have thrush (oral candidiasis).
Hemangioma
red-purple bump on the skin that is typically seen in older adults. It is formed
from a proliferation of dilated small veins.
(Varicella)
caused by the varicella zoster virus that goes away on its own. Infection
spreads among humans through fluids from the airways, such as from coughing and
sneezing, with non-infected household members at high risk of becoming infected
as well.
Infections
disease caused by the bacterium Chlamydia trachomatis, which affects the genital
tract if acquired through vaginal sex, or the mouth or anus if acquired from
oral or anal sex. Chlamydia is spread through unprotected sex with an infected
person; it can also be spread from an infected mother to her baby at birth.
Helicis
inflammatory condition of the ear's cartilage and overlying skin. The condition
presents with very tender, small bumps (papules) or rounded lumps (nodules).
Herpes)
face, known as orofacial herpes simplex, herpes labialis, cold sores, or fever
blisters, is a common, recurrent skin condition associated with infection by the
herpes simplex virus (HSV).
membranes (the mouth or genitals) that are caused by over 100 types of the human
papillomavirus (HPV). Common warts are usually found on areas of the body prone
to trauma, such as the elbows, knees, and hands. The virus causes thickening of
the top skin layer. They are usually painless and go away on their own,
sometimes taking a few months to resolve, but can take up to two years.
Wart)
by more than 30 types (strains) of human papillomavirus (HPV). The infection
involves the genital area of men or women and is spread by skin-to-skin contact
during sexual activity.
of the tissue on the surface of the eye and/or the inside lining of the
eyelids.
Toxicity
conditions in the eye that are the result of an unwanted reaction to the use of
such solutions.
keratin that are typically found on the toes caused by repeated friction or
pressure to the area. The base of the corn is seen on the surface of the skin
while the top points inward, causing discomfort.
Abrasion
cut (abrasion) of the clear outer layer (cornea) of the eye. Injury (trauma) is
the most common cause for corneal abrasions.
Erosion, Recurrent
breakdown of the outermost layer (epithelium) of the cornea. In recurrent
corneal erosions, the outermost layer of the cornea fails to glue in tightly to
its underlying membrane (basement membrane), making it possible for the
epithelium to break off too easily with little effort.
Foreign Body
has a piece of foreign matter lodged in it. The most common types of foreign
bodies include particles of dust, debris (eg, metal, wood), paint chips, and
plant materials.
refers to a specific appearance of a skin lesion in which a cone-shaped
protuberance arises on the skin caused by overgrowth of the most superficial
layer of skin (epidermis). A cutaneous horn is not a particular lesion but is a
reaction pattern of the skin.
Rhomboidalis Nuchae
manifestation of long-term, prolonged sun exposure and resultant damage to the
skin occurring on the back of the neck. Long-term, chronic sun exposure causes
thickening of the most superficial layer of the skin (the epidermis) and
abnormalities in the composition of the middle layer of the skin (the dermis).
Cyst)
sebaceous cysts, contain a soft "cheesy" material composed of keratin, a protein
component of skin, hair, and nails. Epidermoid cysts form when the top layer of
skin (epidermis) grows into the middle layer of the skin (dermis).
cyst or pseudocyst) is a growth usually occurring on the finger. The cysts are
believed to form from deteriorated issues.
non-contagious condition of skin areas rich in oil glands (the face, scalp, and
upper trunk), marked by flaking (overproduction of skin cells) and sometimes
redness and itching (inflammation) of the scalp, varying in severity from
mild flaking of the scalp to scaly, red patches.
associated with dry skin, which begins with intense itching that is aggravated
by scratching. The exact cause of eczema is unknown, and there is no known cure.
Contact
hypersensitivity reaction (the reaction to the allergen occurs 48–72 hours after
exposure). The most common allergens causing allergic contact dermatitis appear
to be nickel, chromates, rubber chemicals, and neomycin (an antibacterial).
(Pediatric)
substance (the allergen) touching the skin. The reaction occurs 48–72 hours
after exposure. Common allergens are nickel, chromates, rubber chemicals, and
neomycin (an antibacterial medication).
when an infant's sensitive skin is exposed to urine and stool, coupled with the
diaper rubbing and chafing the skin, a tight-fitting diaper, or possible a
diaper being left on too long. A diarrheal illness can bring on or worsen the
condition.
generally defined as a rash limited to the hands (usually the palms and sides of
the fingers) and sometimes the feet. Dyshidrotic eczema manifests as small,
itchy, fluid-filled blisters.
rash caused by direct chemical injury to the skin. Unlike allergic contact
dermatitis, which appears 48–72 hours after exposure to an allergen, the
symptoms of irritant contact dermatitis can result within a few hours if the
exposure is a strong irritant.
Nipple
soreness of either one or both nipples. There are several possible causes of
this problem, including eczema (atopic dermatitis), thrush (a yeast
infection), an allergic reaction (contact dermatitis), or a local irritation.
Nummular
eczema (atopic dermatitis) characterized by coin-shaped, raised areas on the
skin that are scaly. The cause of nummular dermatitis is not known, but it is
associated with triggers such as frequent bathing, irritating and drying soaps,
and exposure to irritating fabrics such as wool.
Perioral
of unknown cause. Some possible causes are the use of topical corticosteroid
creams, cosmetic products, oral contraceptives, fluoride and anti-tartar
ingredients in dental products, and it tends to occur in those prone to eczema.
Childhood
commonly seen around the mouth in children. Children are otherwise well, but
they develop small pink bumps around the mouth and sometimes around the nose and
eyes.
Sumac
sumac dermatides are a reaction to the rhus antigen, which is found in poison
ivy, poison oak, and poison sumac plants.
Seborrheic
is a common non-contagious condition of skin areas rich in oil glands (the face,
scalp, and upper trunk). Seborrheic dermatitis is marked by flaking
(overproduction of skin cells) and sometimes redness and itching (inflammation)
of the skin, and it varies in severity from mild dandruff of the scalp to scaly,
red patches on the skin.
(Pediatric)
non-contagious condition of skin areas rich in oil glands (eg, the face, scalp,
and upper trunk). Seborrheic dermatitis is marked by overproduction of skin
cells (leading to flaking) and sometimes inflammation (leading to redness and
itching). It varies in severity from mild dandruff of the scalp to scaly, red
patches on the skin.
Stasis
irritation of the skin with scaling, rough or dry skin, redness, itching, and
sometimes oozing, crusts, and erosions. Stasis is a term used to describe leg
swelling seen in conditions of poor circulation and fluid buildup.
non-cancerous (benign) skin growths. They are firm to hard, and they are
skin-colored or slightly pigmented.
condition commonly affecting the faces of black and sometimes Asian adults. The
cause of dermatosis papulosa nigra is unknown, although about half of people
affected have a family history of the disease.
Dermopathy
or pigmented pretibial patches, is a skin condition usually found on the lower
legs of people with diabetes. It is thought to result from changes in the small
blood vessels that supply the skin and from minor leakage of blood products from
these vessels into the skin.
(Candidiasis)
normally found in the digestive (gastrointestinal) tract. If your baby is
wearing a moist or blocked up (occluded) diaper, particularly one that is dirty
(has fecal contamination), an inflammatory skin rash (dermatitis) may develop on
the baby's skin.
Rash (Irritant Diaper Dermatitis)
when an infant's sensitive skin is exposed to urine and stool, coupled with the
diaper rubbing and chafing the skin, a tight-fitting diaper, or possible a
diaper being left on too long. A diarrheal illness can bring on or worsen the
condition.
self-protection mechanism (immune system) attacks your own body rather than a
foreign invader. The cause of lupus is unknown, and the disease usually takes
one of two forms: systemic lupus erythematosus (SLE), which can affect any body
organ; and discoid lupus erythematosus (DLE), which is milder and usually
affects only the skin.
Unclassified
drug reaction, is a skin condition caused by a medication. A drug rash can
appear in many forms, and any medication can cause a drug rash.
Eruption, Unclassified (Pediatric)
drug rash, is a skin condition caused by taking a drug (medication). A drug
eruption can appear in many ways, and any medication can cause a drug eruption.
skin with fine scaling of skin and, occasionally, with small cracks in the
skin. Dry skin is also known as winter itch or asteatosis.
Dermatitis)
generally defined as a rash limited to the hands (usually the palms and sides of
the fingers) and sometimes the feet. Dyshidrotic eczema manifests as small,
itchy, fluid-filled blisters.
associated with dry skin, which begins with intense itching that is aggravated
by scratching. The exact cause of eczema is unknown, and there is no known cure.
sebaceous cysts, contain a soft "cheesy" material composed of keratin, a protein
component of skin, hair, and nails. Epidermoid cysts form when the top layer of
skin (epidermis) grows into the middle layer of the skin (dermis).
Disease)
called slapped-cheek disease, is a common illness in young children due to
infection with parvovirus B19. Fifth disease is spread by contact with others
who are infected, by exposure to fluid from the nose (respiratory secretions).
Nodosum
characterized by the sudden eruption of tender, red bumps, particularly on the
shins. It represents inflammation of the deeper portions of the skin (the
adipose tissue, or fatty layer of skin).
affecting the skin folds. The slowly enlarging patches of pink to brown dry skin
are caused by an infection by the bacterium Corynebacterium minutissimum.
Infectiosum)
called slapped-cheek disease, is a common illness in young children due to
infection with parvovirus B19. Fifth disease is spread by contact with others
who are infected, by exposure to fluid from the nose (respiratory secretions).
Floaters
that comes from changes in the back chamber of the eye (the posterior chamber,
also known as the vitreous cavity).
membranes (the mouth or genitals) that are caused by over 100 types of the human
papillomavirus (HPV). The virus causes thickening of the top skin layer. Flat
warts tend to stay small in size but can be numerous in quantity. They are
usually painless and go away on their own, sometimes taking a few months to
resolve (but can take up to 2 years).
inflammation of one or more hair follicles in a limited area. It typically
occurs in areas of irritation, such as sites of shaving, skin friction, or
rubbing from clothes. In most cases of folliculitis, the inflamed follicles are
infected with bacteria, especially with Staphylococcus organisms, that
normally live on the skin.
Pseudomonas (Hot Tub Folliculitis)
is an infection of the hair follicle with Pseudomonas bacteria. It is
most commonly seen in people who bathe in a contaminated spa, swimming pool, or
hot tub.
sebaceous (oil-producing) glands seen on the moist tissue that lines some organs
and body cavities (mucosal surfaces). The "spots" are asymptomatic and can be
found on the head of the penis, the inner foreskin, and, most commonly, at
the border of the lips.
on the skin resulting from the deep infection of a hair follicle. The infection
is usually caused by a type of bacteria called Staphylococcus aureus
(staph).
the genital area, is a common, recurrent skin condition associated with
infection by the herpes simplex virus (HSV). HSV infection usually appears as
small blisters or sores around the mouth, nose, genitals, and buttocks, though
infections can develop almost anywhere on the skin.
Acuminata)
by more than 30 types (strains) of human papillomavirus (HPV). The infection
involves the genital area of men or women and is spread by skin-to-skin contact
during sexual activity.
Measles (Rubella)
rubella virus and spreads among humans through contact with fluids in the
respiratory tract. The development (incubation) period of German measles is
14–21 days before starting to feel ill, and a rash accompanied by fever appears
1–7 days later.
caused by the bacterium Neisseria gonorrhea. It is a contagious sexually
transmitted disease spread by unprotected oral, vaginal, or anal sex with an
infected partner. The bacterium can live in the mouth, semen or vaginal fluids
of infected persons. It is possible to be infected without symptoms and continue
to spread the disease.
of how the body processes nutrients (metabolism) in which crystals of uric acid
are deposited in the joints, tendons, and skin. Most commonly affecting men,
gout emerges as the sudden development of swollen, red, hot, tender joints,
especially at the big (great) toe, ankle, wrist, and knee.
Annulare
characterized by bumps appearing over the joints and the backs of the hands. Its
cause is not known, and most episodes of granuloma annulare clear up after a few
years, with or without treatment.
Pyogenic
that often appears as a rapidly growing, bleeding bump on the skin or inside the
mouth. It is composed of blood vessels and may occur at the site of minor
injury.
resulting in hair loss. The immune system of the body mistakenly stops hair
growth for unknown reasons.
Female Pattern Baldness (Female Pattern Alopecia)
hair loss affecting women due to an inherited susceptibility. It is most
commonly noticed after menopause, although it may begin earlier.
Male Pattern Baldness (Male Pattern Alopecia)
androgenetic alopecia, is the patterned balding of a man. Although the condition
may affect both the appearance and self-esteem of some men, one should note that
the condition is not a medical disorder.
benign condition of elongation and staining of the fingerlike projections
(papillae) on the tongue surface. This condition may be caused by overgrowth of
a bacteria or yeast that produces a colored substance (pigment).
appearing (acute), self-limited viral disease caused by viruses of
the enterovirus group, particularly Coxsackievirus A16. The development
(incubation) period from infection to symptoms is short, from 3–6 days.
Lice (Pediculosis Capitis)
common, highly contagious condition that often occurs in nurseries, day care
centers, and schools. It is caused by infestation with the human head louse,
Pediculus humanus capitis, and it can be very itchy.
Simplex Virus (HSV)
the herpes simplex virus is called primary herpes. This may be more severe than
the more commonly recognized secondary, or recurrent, herpes infections, which
are also called cold sores or fever blisters.
Genital
the genital area, is a common, recurrent skin condition associated with
infection by the herpes simplex virus (HSV). HSV infection usually appears as
small blisters or sores around the mouth, nose, genitals, and buttocks, though
infections can develop almost anywhere on the skin.
Orofacial
face, known as orofacial herpes simplex, herpes labialis, cold sores, or fever
blisters, is a common, recurrent skin condition associated with infection by the
herpes simplex virus (HSV).
Sacral
buttocks—also called sacral herpes simplex or genital herpes—is a common,
recurrent skin condition associated with infection by the herpes simplex virus
(HSV). HSV infection usually appears as small blisters or sores around the
mouth, nose, genitals, buttocks, and lower back, though infections can develop
almost anywhere on the skin.
Whitlow
simplex, finger herpes, or hand herpes—is a painful viral infection occurring on
the fingers or around the fingernails. Herpetic whitlow is caused by infection
with the herpes simplex virus (HSV).
common skin condition with an itchy rash of pink to red bumps that appear and
disappear anywhere on the body. An individual lesion of hives typically lasts a
few hours before fading away, and new hives can appear as older areas disappear.
inflamed growth (swelling, lesion) of the eyelid. They can occur at the lid
margin or farther up the lid on either the inner (tarsal) side or the outer
(skin) side of the lid. A chalazion is the chronic form of a stye, and its
cellular makeup is different than that of a stye.
(Pseudomonas Folliculitis)
is an infection of the hair follicle with Pseudomonas bacteria. It is
most commonly seen in people who bathe in a contaminated spa, swimming pool, or
hot tub.
Immunodeficiency Virus (HIV) Primary Infection
acute, flu-like illness that develops anywhere from 1–6 weeks following exposure
to HIV (the human immunodeficiency virus).
Post-Inflammatory
darkening of the skin in an area of prior injury or skin disorder from increased
pigment (melanin) left from the healing process. Sometimes the darkening may
also be due to an iron pigment left behind when old red blood cells die.
Post-Inflammatory
skin color (pigmentation) after your skin heals from an injury. The
pigment-producing cells (melanocytes) are damaged or destroyed in the healing
process.
ichthyosis or fish scale disease, is a skin condition resulting in scaly skin,
especially on the arms and legs. Its name is derived from the Greek word meaning
"fish."
skin infection that is usually a minor problem, but sometimes complications may
occur that require treatment. Complications related to impetigo can include
deeper skin infection (cellulitis), meningitis, or a kidney inflammation (post
streptococcal glomerulonephritis, which is not prevented by treatment).
surfaces in body fold regions (armpits, under the breasts, belly, buttocks,
groin, and sometimes between fingers or toes). Intertrigo can be worsened by any
conditions causing increased heat, wetness, and friction.
rash caused by direct chemical injury to the skin. Unlike allergic contact
dermatitis, which appears 48–72 hours after exposure to an allergen, the
symptoms of irritant contact dermatitis can result within a few hours if the
exposure is a strong irritant.
Itch (Tinea Cruris)
(superficial) fungal infection of the skin on either side of the body where the
thigh joins the abdomen, known as the groin. It is often spread to the groin
from tinea infection on the feet (tinea pedis or athlete's feet).
dermatosis) is a condition where the skin becomes scaly and red on the soles of
the feet of children and young teenagers. The cause of sweaty sock syndrome is
unknown, though alternating moist and dry conditions may lead to the condition.
found at areas of previously injured skin (burns, lacerations), or they may
arise spontaneously on normal skin. They may be single or multiple.
cancer usually appearing as a volcano-like bump on the sun-exposed skin of
middle-aged and elderly individuals. Many scientists consider keratoacanthoma to
be a less serious form of squamous cell carcinoma.
Pitted
affecting the soles of the feet and, less commonly, the palms of the hands. It
is caused by a bacterial infection of the skin and may give off an unpleasant
odor.
Pilaris
condition appearing as small, whitish bumps on the upper arms and thighs,
especially of children and young adults. Individual lesions of keratosis pilaris
arise when a hair follicle becomes plugged with keratin, a protein found in
skin, hair, and nails.
Seborrheic
of unknown cause seen in adults due to a thickening of an area of the top skin
layer.
severe cases of tinea capitis, or scalp ringworm. A kerion appears as an
inflamed, thickened, pus-filled area, and it is sometimes accompanied by a
fever.
(pigmented) lesion not caused by sun exposure, which looks like the freckle-like
condition (lentigo) caused by sun exposure (solar lentigo). In both conditions,
an increased number of pigment-producing cells (melanocytes) are present.
also known as a sun-induced freckle or senile lentigo, is a dark
(hyperpigmented) lesion caused by natural or artificial ultraviolet (UV)
light. Solar lentigines may be single or multiple. This type of lentigo is
different from a simple lentigo (lentigo simplex) because it is caused by
exposure to UV light.
and, less often, the scalp, fingernails, toenails, and/or inside the mouth or
genitalia (mucous membranes). Lichen planus can resolve on its own without
treatment or be chronic, even with aggressive treatment. The cause of the
inflammation that leads to lichen planus is unknown.
Simplex Chronicus
neurodermatitis circumscripta, is an itchy skin condition causing thickened skin
at the areas of skin injured by repeated scratching and rubbing. Lichen simplex
chronicus is not a primary disease but rather the skin's response to chronic
physical injury (trauma).
Erythematosus, Discoid
self-protection mechanism (immune system) attacks your own body rather than a
foreign invader. The cause of lupus is unknown, and the disease usually takes
one of two forms: systemic lupus erythematosus (SLE), which can affect any body
organ; and discoid lupus erythematosus (DLE), which is milder and usually
affects only the skin.
Erythematosus, Systemic
lupus, is a chronic inflammatory disease that can affect almost any part of the
body, especially the skin, joints, kidneys, heart, lungs, bones, blood, or
brain. Systemic lupus erythematosus is considered an autoimmune disorder,
meaning that a person's own immune system attacks his or her own healthy cells
and tissues, causing inflammation and damage.
the bacteria Borrelia burgdorferi. The disease is transmitted by infected
ticks that also feed on mice and deer. The tick can be found attached to the
skin in many cases. Most cases of Lyme disease occur in the spring and summer
months.
sexually transmitted disease caused by certain types of the bacteria called
Chlamydia trachomatis. It is spread through having unprotected vaginal,
oral, or anal sex.
infection of the respiratory system, which is caused by a virus. It does not
occur often in the United States, since immunizations have been required since
the 1960s.
cancer. This cancer starts in the color-producing (pigment-producing) cells of
the skin. Melanoma may develop from a previously existing mole (nevus) or may
occur as a new lesion.
Macule, Oral
(benign), dark spot found on the lips or inside the mouth. An oral melanotic
macule found on the lip is sometimes called a labial melanotic macule.
unknown cause that causes dark (hyperpigmented) patches, primarily on
the face. The condition is marked by brown patches that worsen in response to
increases of the hormone estrogen, such as during pregnancy or with the use of
birth control pills.
findings in people of all ages. Milia formed directly from sloughed-off skin
(primary milia) are small, fluid-filled lesions (cysts) usually found on the
faces of infants and adults, while lesions formed indirectly (secondary milia)
are small cysts found within areas of skin affected by another skin condition.
as heat rash, is a rash of small red bumps caused by blockage of the sweat
glands. It can be due to high fever, excessive sweating, or being over-bundled.
It is seen commonly in hot, humid tropical climates. It can cause
discomfort, itching, and, sometimes, stinging or "prickly"-type pain.
lesion that is made up of the color-producing (pigment-producing) cells of the
skin (melanocytes). A mole that is present at birth is referred to as a
congenital nevus.
(Atypical Nevus)
moles (dysplastic nevi), are caused by collections of the color-producing
(pigment-producing) cells of the skin (melanocytes) in which the cells grow in
an abnormal way. Atypical moles may occur as new lesions or as a change in an
existing mole.
Contagiosum
harmless viral infection of the skin. Although it is painless and usually goes
away after several months, some cases can last a few years.
(Pediatric)
usually harmless viral infection of the skin. Although molluscum contagiosum is
painless and usually goes away after several months, some infections can last a
few years. Molluscum contagiosum is a common painless and usually harmless
viral infection of the skin. Although molluscum contagiosum is painless and
usually goes away after several months, some infections can last a few years.
fluid-containing (cyst-like) swelling of the lip or mouth lining (mucosa) due to
mucus from the small salivary glands of the mouth leaking into the soft tissue,
usually from injury (trauma) or blockage of the gland.
cyst or pseudocyst) is a growth usually occurring on the finger. The cysts are
believed to form from deteriorated issues.
Infection, Bacterial (Paronychia)
infection, is inflammation of the region of the finger or toe from which the
nail plate originates, which is called the proximal nail fold (PNF). This
inflammation may occur in the short term (acute) or may be a long-term problem
or one that keeps coming back (chronic).
Fungal (Onychomycosis)
infection, is infection of the fingernails or toenails by forms of fungi and
yeast. Fungal nail infections account for nearly half of all nail disorders.
(Onycholysis)
separation (detachment) of the fingernail or toenail from the nail bed at the
end of the nail (distal) and/or on the sides of the nail (lateral). The
appearance of nail lifting may resemble a half-moon, or the free edge of the
nail may rise up like a hood.
(Onychoschizia)
but also known as onychoschisis or lamellar dystrophy, is a condition that
causes horizontal splits within the nail plate. Nail splitting is often seen
together with onychorrhexis – long-wise (longitudinal) splitting or ridging of
the nail plate – and these 2 diseases together are called "brittle nail
syndrome."
lesion that is made up of the color-producing (pigment-producing) cells of the
skin (melanocytes). A mole that is present at birth is referred to as a
congenital nevus.
Atypical
moles (dysplastic nevi), are caused by collections of the color-producing
(pigment-producing) cells of the skin (melanocytes) in which the cells grow in
an abnormal way. Atypical moles may occur as new lesions or as a change in an
existing mole.
that is present at birth or shortly thereafter. It is one common type of
birthmark, caused by a cluster of color (pigment) cells in the skin and
sometimes in deeper tissues.
Dermatitis
soreness of either one or both nipples. There are several possible causes of
this problem, including eczema (atopic dermatitis), thrush (a yeast
infection), an allergic reaction (contact dermatitis), or a local irritation.
Paraesthetica
skin of the upper back becomes itchy, and there is often a darker patch of skin
on the itchy area. Notalgia paresthetica may be caused by a problem with the
nerve cells that provide feeling to the skin of the upper back (sensory
neuropathy).
Dermatitis
eczema (atopic dermatitis) characterized by coin-shaped, raised areas on the
skin that are scaly. The cause of nummular dermatitis is not known, but it is
associated with triggers such as frequent bathing, irritating and drying soaps,
and exposure to irritating fabrics such as wool.
separation (detachment) of the fingernail or toenail from the nail bed at the
end of the nail (distal) and/or on the sides of the nail (lateral). The
appearance of nail lifting may resemble a half-moon, or the free edge of the
nail may rise up like a hood.
infection, is infection of the fingernails or toenails by forms of fungi and
yeast. Fungal nail infections account for nearly half of all nail disorders.
but also known as onychoschisis or lamellar dystrophy, is a condition that
causes horizontal splits within the nail plate. Nail splitting is often seen
together with onychorrhexis – long-wise (longitudinal) splitting or ridging of
the nail plate – and these 2 diseases together are called "brittle nail
syndrome."
Melanotic Macule
(benign), dark spot found on the lips or inside the mouth. An oral melanotic
macule found on the lip is sometimes called a labial melanotic macule.
fluid-containing (cyst-like) swelling of the lip or mouth lining (mucosa) due to
mucus from the small salivary glands of the mouth leaking into the soft tissue,
usually from injury (trauma) or blockage of the gland.
infection, is inflammation of the region of the finger or toe from which the
nail plate originates, which is called the proximal nail fold (PNF). This
inflammation may occur in the short term (acute) or may be a long-term problem
or one that keeps coming back (chronic).
Lice)
common, highly contagious condition that often occurs in nurseries, day care
centers, and schools. It is caused by infestation with the human head louse,
Pediculus humanus capitis, and it can be very itchy.
crab lice or crabs, is a louse (a type of wingless, bloodsucking insect) that
can live and multiply (infest) on skin that grows pubic hair. Pubic lice most
commonly affect the pubic hair, but other hair-bearing areas, such as
the armpits and eyelashes, eyebrows, or scalp, may also be affected.
Dermatitis
of unknown cause. Some possible causes are the use of topical corticosteroid
creams, cosmetic products, oral contraceptives, fluoride and anti-tartar
ingredients in dental products, and it tends to occur in those prone to eczema.
(Pediatric)
commonly seen around the mouth in children. Children are otherwise well, but
they develop small pink bumps around the mouth and sometimes around the nose and
eyes.
to as wens, are common fluid-filled growths (cysts) that form from hair
follicles that are most often found on the scalp. The cysts are smooth and
mobile, filled with keratin (a protein component found in hair, nails, and
skin), and they may or may not be tender.
(Conjunctivitis)
of the tissue on the surface of the eye and/or the inside lining of the
eyelids.
Keratolysis
affecting the soles of the feet and, less commonly, the palms of the hands. It
is caused by a bacterial infection of the skin and may give off an unpleasant
odor.
Alba
(benign) skin condition affecting children. It appears as light-colored patches,
especially on the cheeks.
Rosea
(benign) rash that mostly affects the back, chest, and abdomen. It starts fairly
quickly, lasts about 6–8 weeks, and is usually not itchy.
membranes (the mouth or genitals) that are caused by over 100 types of the human
papillomavirus (HPV). The virus causes thickening of the top skin layer. A
plantar wart occurs on the sole of the foot. It can look and feel like a
callus. Plantar warts can be small, or they can grow to cover most of the sole
of the foot. They are usually painless and go away on their own, sometimes
taking a few months to resolve (but can take up to 2 years).
non-cancerous (benign) skin condition in fair-skinned adults, which is probably
caused by long-term sun exposure. Poikiloderma of Civatte shows a specific
pattern of color change in the skin due to sun damage to the neck and sometimes
the center of the chest.
sumac dermatides are a reaction to the rhus antigen, which is found in poison
ivy, poison oak, and poison sumac plants.
Hyperpigmentation
darkening of the skin in an area of prior injury or skin disorder from increased
pigment (melanin) left from the healing process. Sometimes the darkening may
also be due to an iron pigment left behind when old red blood cells die.
Hypopigmentation
skin color (pigmentation) after your skin heals from an injury. The
pigment-producing cells (melanocytes) are damaged or destroyed in the healing
process.
whereby one loses the ability to see near without corrective lenses or
corrective surgery. The cause of presbyopia is a change in the ability of the
human lens to change its shape (a process called accommodation) to allow one to
focus on objects that are at close range.
(Miliaria Rubra)
as heat rash, is a rash of small red bumps caused by blockage of the sweat
glands. It can be due to high fever, excessive sweating, or being over-bundled.
It is seen commonly in hot, humid tropical climates. It can cause
discomfort, itching, and, sometimes, stinging or "prickly"-type pain.
Syphilis
corkscrew-shaped bacterium (a spirochete) called Treponema pallidum. It
causes disease when it penetrates broken skin of the genitals or the mucous
membranes of the mouth or anus.
known as shaving bumps, affects men with tightly curved (or curly) hairs; the
problem is a reaction to the tip of the hair growing back under the skin or into
the hair follicle after a close shave. Razor bumps is not an infection but
rather a "foreign body" reaction, much like the body would react to a splinter
of wood in the skin.
problem with thickened red, and often scaly, skin. It is very likely to run in
families (hereditary) and seems to be caused by errors in how the immune system
works.
Lice (Pediculosis Pubis)
crab lice or crabs, is a louse (a type of wingless, bloodsucking insect) that
can live and multiply (infest) on skin that grows pubic hair. Pubic lice most
commonly affect the pubic hair, but other hair-bearing areas, such as
the armpits and eyelashes, eyebrows, or scalp, may also be affected.
Granuloma
that often appears as a rapidly growing, bleeding bump on the skin or inside the
mouth. It is composed of blood vessels and may occur at the site of minor
injury.
blood vessels to the fingers and toes (digits) become abnormally closed off
(constricted). The fingers and toes of individuals with Raynaud's disease change
color from white to blue to red, often causing them to feel numb.
Bumps (Pseudofolliculitis Barbae)
known as shaving bumps, affects men with tightly curved (or curly) hairs; the
problem is a reaction to the tip of the hair growing back under the skin or into
the hair follicle after a close shave. Razor bumps is not an infection but
rather a "foreign body" reaction, much like the body would react to a splinter
of wood in the skin.
breakdown of the outermost layer (epithelium) of the cornea. In recurrent
corneal erosions, the outermost layer of the cornea fails to glue in tightly to
its underlying membrane (basement membrane), making it possible for the
epithelium to break off too easily with little effort.
Corporis)
because some may form a ring-like pattern on affected areas of the body. Tinea
corporis, also known as ringworm of the body, tinea circinata, or simply
ringworm, is a surface (superficial) fungal infection of the skin.
Beard (Tinea Barbae)
because some may form a ring-like pattern on affected areas of the body. Beard
ringworm (tinea barbae), also known as tinea sycosis or barber's itch, is a
fungal infection of the skin, hair, and hair follicles of the beard and mustache
area.
Facial (Tinea Faciale)
because some infections form a ring-like pattern on affected areas of the
body. Facial ringworm (tinea faciale), also known as tinea faciei or ringworm of
the face, is a common, non-cancerous (benign) fungal infection of the surface
(superficial) skin of the face.
(Tinea Capitis)
mild infection of the scalp and hair that appears as scaly spots and patches of
broken hair on the head. Caused by a fungus, it is most commonly seen in
children.
chronic inflammation of the face of unknown cause and without a permanent cure.
(Sixth Disease)
subitum, and roseola infantum, is a mild illness that mainly affects children
that will go away on its own. Roseola is caused by viruses of the herpes
type. Infected children have a few days of high fever followed by a rash as the
fever goes down.
(German Measles)
rubella virus and spreads among humans through contact with fluids in the
respiratory tract. The development (incubation) period of German measles is
14–21 days before starting to feel ill, and a rash accompanied by fever appears
1–7 days later.
(Measles)
infection of the respiratory system, which is caused by a virus. It does not
occur often in the United States, since immunizations have been required since
the 1960s.
buttocks—also called sacral herpes simplex or genital herpes—is a common,
recurrent skin condition associated with infection by the herpes simplex virus
(HSV). HSV infection usually appears as small blisters or sores around the
mouth, nose, genitals, buttocks, and lower back, though infections can develop
almost anywhere on the skin.
tiny parasite (mite) called Sarcoptes scabiei that can live and multiply
(infest) on skin. They are passed between people by prolonged skin-to-skin
contact.
(Pediatric)
tiny parasite (mite) called Sarcoptes scabiei that can live and multiply
(infest) on skin. They are passed between people by prolonged skin-to-skin
contact.
(Ichthyosis Vulgaris)
ichthyosis or fish scale disease, is a skin condition resulting in scaly skin,
especially on the arms and legs. Its name is derived from the Greek word meaning
"fish."
bacteria called Streptococcus, which not only causes a throat infection
("strep throat"), but also produces a poison (toxin) causing the distinctive
rash of scarlet fever. Some people are more sensitive to the toxin than others,
so not everyone in a family who is infected will have the rash, even if they
have the throat infection.
Hyperplasia
enlargement of the skin oil glands.
Dermatitis
is a common non-contagious condition of skin areas rich in oil glands (the face,
scalp, and upper trunk). Seborrheic dermatitis is marked by flaking
(overproduction of skin cells) and sometimes redness and itching (inflammation)
of the skin, and it varies in severity from mild dandruff of the scalp to scaly,
red patches on the skin.
(Pediatric)
non-contagious condition of skin areas rich in oil glands (eg, the face, scalp,
and upper trunk). Seborrheic dermatitis is marked by overproduction of skin
cells (leading to flaking) and sometimes inflammation (leading to redness and
itching). It varies in severity from mild dandruff of the scalp to scaly, red
patches on the skin.
Keratosis
of unknown cause seen in adults due to a thickening of an area of the top skin
layer.
(Zoster)
zoster, is a painful rash caused by the varicella zoster virus, the virus that
causes chickenpox. When a person gets chickenpox, the virus remains sleeping
(dormant) in one or more bundles of nerves near the spinal cord (nerve roots) in
the body.
(Acrochordon)
inherited condition that manifests as small, flesh-colored growths on a thin
stalk. Skin tags are benign lesions that can sometimes become irritated or
traumatized.
also known as a sun-induced freckle or senile lentigo, is a dark
(hyperpigmented) lesion caused by natural or artificial ultraviolet (UV)
light. Solar lentigines may be single or multiple. This type of lentigo is
different from a simple lentigo (lentigo simplex) because it is caused by
exposure to UV light.
vessels at the skin surface. The pattern sometimes resembles the threads of a
spider's web.
most common form of skin cancer. Squamous cell carcinoma usually occurs on
sun-damaged skin, especially in light-skinned individuals with a long history of
chronic sun exposure.
Dermatitis
irritation of the skin with scaling, rough or dry skin, redness, itching, and
sometimes oozing, crusts, and erosions. Stasis is a term used to describe leg
swelling seen in conditions of poor circulation and fluid buildup.
Ulcer
(ulcer) caused by fluid build-up in the skin from poor vein function (venous
insufficiency). Fluid leaks from the veins into skin tissue when the blood backs
up rather than returning to the heart through the veins.
(Striae)
marks that develop as a result of rapid weight gain or loss, when the skin is
stretched, and as a result of some diseases.
marks that develop as a result of rapid weight gain or loss, when the skin is
stretched, and as a result of some diseases.
(Hordeolum and Chalazion)
inflamed growth (swelling, lesion) of the eyelid. They can occur at the lid
margin or farther up the lid on either the inner (tarsal) side or the outer
(skin) side of the lid. A chalazion is the chronic form of a stye, and its
cellular makeup is different than that of a stye.
ultraviolet light exposure. It appears as reddening and tenderness of the skin
and usually occurs between 12 and 24 hours after the exposure.
Sock Syndrome (Juvenile Plantar Dermatosis)
dermatosis) is a condition where the skin becomes scaly and red on the soles of
the feet of children and young teenagers. The cause of sweaty sock syndrome is
unknown, though alternating moist and dry conditions may lead to the condition.
Primary
corkscrew-shaped bacterium (a spirochete) called Treponema pallidum. It
causes disease when it penetrates broken skin of the genitals or the mucous
membranes of the mouth or anus.
usually found on the upper cheeks and lower eyelids of young
adults. Syringomas are completely harmless and are caused by the overgrowth of
cells from sweat glands (eccrine glands).
lupus, is a chronic inflammatory disease that can affect almost any part of the
body, especially the skin, joints, kidneys, heart, lungs, bones, blood, or
brain. Systemic lupus erythematosus is considered an autoimmune disorder,
meaning that a person's own immune system attacks his or her own healthy cells
and tissues, causing inflammation and damage.
vessels in the outer layer of the skin. When seen on the legs, they are often
called spider veins.
(Oral Candidiasis)
moniliasis, is a yeast infection of the mouth or throat (the oral cavity). The
yeast that most commonly causes oral candidiasis is Candida albicans.
because some may form a ring-like pattern on affected areas of the body. Beard
ringworm (tinea barbae), also known as tinea sycosis or barber's itch, is a
fungal infection of the skin, hair, and hair follicles of the beard and mustache
area.
mild infection of the scalp and hair that appears as scaly spots and patches of
broken hair on the head. Caused by a fungus, it is most commonly seen in
children.
because some may form a ring-like pattern on affected areas of the body. Tinea
corporis, also known as ringworm of the body, tinea circinata, or simply
ringworm, is a surface (superficial) fungal infection of the skin.
(superficial) fungal infection of the skin on either side of the body where the
thigh joins the abdomen, known as the groin. It is often spread to the groin
from tinea infection on the feet (tinea pedis or athlete's feet).
because some infections form a ring-like pattern on affected areas of the
body. Facial ringworm (tinea faciale), also known as tinea faciei or ringworm of
the face, is a common, non-cancerous (benign) fungal infection of the surface
(superficial) skin of the face.
Pedis (Athlete's Foot)
or athlete's foot, is a surface (superficial) fungal infection of the skin of
the foot. The most common fungal disease in humans, athlete's foot, may be
passed to humans by direct contact with infected people, infected animals,
contaminated objects (such as towels or locker room floors), or the soil.
Versicolor
versicolor, is a common, non-cancerous (benign) skin condition caused by surface
(superficial) infection with a type of yeast that normally lives on the skin. In
the right conditions, such as warm, oily, and moist skin, the yeast
(Malassezia) can overgrow and cause a rash, consisting of tan, pink,
brown, or white patches.
the most common cause of periodic (recurring) ulcers inside the mouth and
genital linings (mucous membrane surfaces). Their cause is unknown, but stress,
lack of sleep, trauma, and perhaps some vitamin deficiencies, toothpastes, and
foods can make the condition worse.
Decubitus
pressure sores or ulcers, result from prolonged pressure that cuts off the blood
supply to the skin, causing the skin and other tissue to die.
Stasis (Venous Ulcer)
(ulcer) caused by fluid build-up in the skin from poor vein function (venous
insufficiency). Fluid leaks from the veins into skin tissue when the blood backs
up rather than returning to the heart through the veins.
common skin condition with an itchy rash of pink to red bumps that appear and
disappear anywhere on the body. An individual lesion of hives typically lasts a
few hours before fading away, and new hives can appear as older areas disappear.
caused by the varicella zoster virus that goes away on its own. Infection
spreads among humans through fluids from the airways, such as from coughing and
sneezing, with non-infected household members at high risk of becoming infected
as well.
(Varicosities)
twisted, enlarged veins at the skin surface. The word comes from the Latin word
varix, which means "twisted."
twisted, enlarged veins at the skin surface. The word comes from the Latin word
varix, which means "twisted."
viral rash, is a rash caused by a viral infection. Many viruses can cause a
similar-appearing rash, so it is difficult to tell which one is the
culprit. Your age, duration of illness, and other symptoms may suggest which
virus is the cause. Respiratory and stomach (gastrointestinal) viruses are
common causes of such a rash.
turns against itself (autoimmune disease) where immune cells of the body attack
the color-producing (pigment-producing) cells to cause white patches on the
skin, which may contain hairs that are white in color.
Common
membranes (the mouth or genitals) that are caused by over 100 types of the human
papillomavirus (HPV). Common warts are usually found on areas of the body prone
to trauma, such as the elbows, knees, and hands. The virus causes thickening of
the top skin layer. They are usually painless and go away on their own,
sometimes taking a few months to resolve, but can take up to two years.
membranes (the mouth or genitals) that are caused by over 100 types of the human
papillomavirus (HPV). The virus causes thickening of the top skin layer. Flat
warts tend to stay small in size but can be numerous in quantity. They are
usually painless and go away on their own, sometimes taking a few months to
resolve (but can take up to 2 years).
membranes (the mouth or genitals) that are caused by over 100 types of the human
papillomavirus (HPV). The virus causes thickening of the top skin layer. A
plantar wart occurs on the sole of the foot. It can look and feel like a
callus. Plantar warts can be small, or they can grow to cover most of the sole
of the foot. They are usually painless and go away on their own, sometimes
taking a few months to resolve (but can take up to 2 years).
skin condition that develops flat yellow growths on the eyelids. Xanthelasma is
often seen in people with high cholesterol or other fat (lipid) levels in the
blood, and the lesions contain deposits that are high in fat (lipid-rich).
skin with fine scaling of skin and, occasionally, with small cracks in the
skin. Dry skin is also known as winter itch or asteatosis.
Infection (Candidiasis)
yeast infection, is an infection with the common yeast (or fungus) organism,
Candida albicans, which is commonly found in the
environment. Sometimes this yeast lives in the mouth, digestive
(gastrointestinal) tract, and the vagina, along with many kinds of harmless
bacteria, without causing any issues.
zoster, is a painful rash caused by the varicella zoster virus, the virus that
causes chickenpox. When a person gets chickenpox, the virus remains sleeping
(dormant) in one or more bundles of nerves near the spinal cord (nerve roots) in
the body.
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