a chronic inflammatory skin disorder of the sebaceous glands that is characterized by comedones and blemishes.
a disorder where clients purposely scrape off acne lesions, causing scarring and discoloration.
pink or flesh-colored precancerous lesions that feel sharp or rough, usually as the result of sun damage.
the absence of melanin pigment in the body, including skin, hair, and eyes; the technical term is congenital leukoderma.
a deficiency in perspiration, often a result of a fever or skin disease, that requires medical treatment.
dry,scaly skin from sebum deficiency, which can be due to aging, body disorders, alkalies of harsh soaps, or cold exposure.
is genetically related to overreactive immune systems and is prevalent in people with nasal allergies and asthma.
pinkeye; very contagious.
basal cell carcinoma
the most common and the least severe type of skin cancer, which often appears as light, pearly nodules.
foul-smelling perspiration, usually in the armpits or on the feet.
a large blister containing water fluid; similar to a vesicle, but larger.
a large circumscribed inflammation of the subcutaneous tissue caused by staphylococci; similar to a furuncle (boil) but larger.
increased pigmentation; liver spots.
a tendency to clog follicles and cause a buildup of dead skin cells, resulting in comedones.
an open comedo or blackhead; a mass of hardened sebum and skin cells in a hair follicle. When the follicle is filled with an excess of oil, a blackhead forms. It is dark because it is exposed to oxygen and oxidizes. Closed comedones do not have a follicular opening and are called milia or whiteheads.
an inflammatory skin condition caused by contact with a substance or chemical. Occupational disorders from ingredients in cosmetics and chemical solutions can cause it; also called dermatitis venenata.
dead cells form over a wound or blemish while it is healing, resulting in an accumulation of sebum or pus, sometimes mixed with epidermal material. An example is the scab on a sore.
a closed, abnormally developed sac containing fluid, infection, or other matter above or below the skin.
any inflammatory condition of the skin. Various forms of lesions, such as eczema, vesicles, or papules.
physician who treats skin disorders and diseases.
branch of science that studies and treats the skin and its disorders.
an inflammatory, painful itching of the skin, acute or chronic in nature, with dry or moist lesions. This condition should be referred to a physician. Seborrheic dermatitis is a common form of this.
swelling caused by a response to injury or infection.
redness caused by inflammation.
a skin sore or abrasion produced by scratching or scraping.
a crack in the skin that penetrates the dermis; ex. are chapped lips or hands.
inflammation of the hair follicles.
a subcutaneous abscess filled with pus; also called boils; caused by bacteria in the glands or hair follicles.
herpes simplex virus 1
this strain of the herpes virus causes fever blisters or cold sores; it is a recurring, contagious viral infection consisting of a vesicle or group of vesicles on a red, swollen base. The blisters usually appear on the lips or nostrils.
herpes simplex virus 2
this strain of the virus affecs the genitals.
shingles, a painful skin condition from the chickenpox virus; characterized by groups of blisters that form a rash.
excessive perspiration caused by heat or body weakness. Medical treatment is required.
a thickening of the skin caused by a mass of keratinized cells.
overproduction of pigment.
an abnormal growth; many are benign, or harmless.
lack of pigment.
a contagious bacterial infection often occurring in children; characterized by clusters of small blisters.
a thick scar resulting from excessive growth of fibrous tissue (collagen).
cells composed of keratin.
an acquired, thickened patch of epidermis. A callus caused by pressure or friction is one.
abnormally thick buildups of cells.
redness and bumpiness in the cheeks or upper arms; caused by blocked follicles.
freckles; small yellow-brown colored spots; when result from sunlight exposure are actinic, or solar ones; patches are referred to as large macules.
structural changes in tissues caused by damage or injury.
light, abnormal patches caused by a burn or congenital disease that destroys the pigment producing cells.
a flat spot or discoloration on the skin, such as a freckle. Neither raised nor sunken.
the most serious form of skin cancer. Black or dark patches on the skin are usually uneven in texture, jagged, or raised.
term for hyperpigmentation; pregnancy mask. This condition is triggered by hormonal changes and may fade with time.
also called whiteheads; whitish, pearl-like masses of sebum and dead cells under the skin. Common in dry skin types and may form after skin trauma, such as a laser resurfacing.
prickly heat; acute inflammatory disorder of the sweat glands resulting in the eruption of red vesicles and burning, itching skin from excessive heat exposure.
a brownish spot ranging in color from tan to bluish black. Some are flat, resembling freckles; others are raised and darker.
a birthmark or mole; malformation of the skin due to abnormal pigmentation or dilated capillaries.
also referred to as tumors, but these are smaller bumps caused by conditions such as scar tissue, fatty deposits, or infections.
a pimple; small elevation on the skin that contains no fluid but may develop pus.
an acne-like condition around the mouth. These are mainly small clusters of papules that could be caused by toothpaste or products used on the face.
characterized by flat, non-palpable changes in skin color such as macules or patches, or an elevation formed by fluid in a cavity, such as vesicles, bullae or pustules.
the medical term for itching.
often referred to as "razor bumps"; resembles folliculitis without the pus.
a skin disease characterized by red patches covered with white-silver scales. It is caused by an overproliferation of skin cells that replicate too fast. Immune dysfunction could be the cause. Usually found in patches on the scalp, elbows, knees, chest, and lower back.
an inflamed papule with a white or yellow center containing pus, a fluid consisting of white blood cells, bacteria, and other debris produced from an infection.
hereditary factor in which dead skin cells do not shed from the follicles as they do on normal skin.
inflammation of the skin; chronic congestion primarily on the cheeks and nose. Characterized by redness, dilation of blood vessels, and in severe cases, the formation of papules and pustules.
flaky skin cells; any thin plate of epidermal flakes, dry or oily. Example is abnormal or excessive dandruff.
light-colored, slightly raised mark on the skin formed after an injury or lesion of the skin has healed up. The tissue hardens to heal the injury. Elevated ones are hypertrophic, like a keloid.
similar to open comedones, these are mainly solidified impactions of oil without the cell matter.
benign lesions frequently seen in oilier areas of the face. An overgrowth of the sebaceous gland, they appear similar to open comedones; often doughnut shaped, with sebaceous material in the center.
severe oiliness of the skin; an abnormal secretion from the sebaceous glands.
a common form of eczema.
skin damage, developed in the later stages of disease, that changes the structure of tissue or organs.
small outgrowths or extensions of the skin that look like flaps. They are benign and are common under the arms or on the neck.
squamous cell carcinoma
more serious than basal cell carcinoma; characterized by scaly red papules or nodules.
brown or wine-colored discoloration. Occur after certain diseases, or after moles, freckles or liver spots disappear. Port wine is a birthmark, which is a vascular type.
a sebaceous cyst or subcutaneous tumor filled with sebum; ranges in size from a pea to an orange. It usually appears on the scalp, neck, and back; also called a wen.
an increase in pigmentation due to the melanin production that results from exposure to UV rays. Melanin is designed to help protect the skin from the sun's UV rays.
describes capillaries that have been damaged and are now larger, or distended blood vessels. Commonly called couperose skin.
a fungal infection.
a contagious infection that forms a ringed, red pattern with elevated edges. Also called ringworm.
yeast infection that inhibits melanin production.
an abnormal rounded, solid lump; larger than a papule.
a large nodule; an abnormal cell mass resulting from excessive cell multiplication and varying in size, shape, and color.
an open lesion on the skin or mucous membrane of the body, accompanied by pus and loss of skin depth. A deep erosion; a depression in the skin, normally due to infection or cancer.
vascular dilation of blood vessels.
a wart; hypertrophy of the papillae and epidermis caused by a virus. It is infectious and contagious.
a small blister or sac containing clear fluid. Poison ivy and poison oak produce it.
white spots or areas on the skin from lack of pigment cells; sunlight makes it worse.
an itchy, swollen lesion caused by a slow, insect bite, skin allergy reaction, or stings. Hives and mosquito bits are some. Hives can be caused by exposure to allergens used in products.