Congenital hypopigmentation, or absence of melanin pigment of the body, including the skin, hair, and eyes.

An allergy to an ingredient or chemical, usually caused by repeated skin contact with the chemical

Cannot survive in the presence of oxygen

Deficiency in perspiration of the inability to sweat, often a result of damage to autonomic nerves.

Most common and least severe type of skin cancer; often characterized by light or pearly nodules

Foul-smelling perspiration, usually noticeable in the armpits or on the feet, which is generally caused by bacteria.

A large blister containing a watery fluid; smaller to a vesicle, but larger

AKA "mask of pregnancy";

condition characterized by typically brown hyperpigmentation, generally on the face, which is not elevated

Lightly raised mark on the skin formed after an injury or lesion of the skin has healed.

AKA "pink eye";

infection of the eye(s) that may be caused by a bacteria or a virus; generally extremely contagious

An inflammation of the skin caused by having contact with certain chemicals or substances.

Dead cells that form over a wound or blemish while it is healing; an accumulation of sebum and pus, sometimes mixed with epidermal material.

Closed, abnormally developed sac that contains fluid, pus, semifluid, or morbid matter above or below the skin.

Inflammatory condition of the skin.

Abnormal colorations of the skin that accompany skin disorders and are symptoms of many systemic disorders.

An inflammatory, uncomfortable, and often chronic disease of the skin; characterized by moderate to severe inflammation, scaling, and sometimes severe itching.

Skin sore or abrasion produced by scratching or scraping

Primarily environmental factors that contribute to aging and the appearance of aging.

A crack in the skin that penetrates the dermis.

Unstable molecules that cause biochemical aging.

Recurring viral infection.

Excessive sweating, caused by heat or general body weakness.

Abnormal growth of the skin.

Absence of pigment, resulting in light or white splotches.

Contagious bacterial skin infection characterized by weeping lesions.

Skin-aging factors over which we have little control.

Occurs when irritating substances temporarily damage the epidermis.

Thick scar resulting from excessive growth of fibrosis tissue.

Acquired superficial, thickened patch of epidermis.

Technical term for freckles -- small yellow-colored to brown-colored spots on skin exposed to sunlight and air.

A mark on the skin; may indicate an injury or damage that changes the structure of tissues or organs.

Skin disorder characterized by light, abnormal patches (hypopigmentation); caused by a burn, scar, inflammation, or congenital disease that destroys the pigment-producing cells.

Flat spot or discoloration on the skin.

Most serious form of skin cancer; often characterized by black or dark brown patches on the skin that may appear uneven in texture, jagged, or raised.

Benign, keratin-filled cysts that can appear just under the epidermis and have no visible opening.

AKA "prickly heat";

an acute inflammatory disorder of the sweat glands, characterized by the eruption of small, red vesicles and accompanied by burning, itching skin.

Small brownish spot or blemish on the skin, ranging in color from pale tan to brown or bluish black.

AKA "birthmark";

a small or large malformation of the skin due to abnormal pigmentation or dilated capillaries.

A solid bump larger than 0.4 inches (1 centimeter) than can be easily felt.

Product that has been designed and proven not to clog the follicles.

Lesions that are different in color than the color of the skin and/or lesions that are raised above the surface of the skin.

Skin disease characterized by red patches covered with silver-white scales.

The hereditary tendency for acne-prone skin to retain dead cells in the follicle, forming an obstruction that clogs follicles and exacerbates inflammatory acne lesions.

Chronic condition that appears primarily on the cheeks and nose, and is characterized by flushing (redness), telangiectasis (distended or dilated surface blood vessels), and, in some cases, the formation of papules and pastules.

Any thin, dry, or oily plate of epidermal flakes.

AKA "cicatrix";

a lightly raised mark on the skin formed after an injury or lesion of the skin has healed.

A large, protruding pocket-like lesion filled with sebum.

Skin condition caused by an inflammation of the sebaceous glands. It is often characterized by redness, dry or oily scaling, crusting, and/or itchiness.

Characterized by piles of material on the skin surface.

Allergic reaction created by repeated exposure to a chemical or substance.

A small brown-colored or flesh-colored outgrowth of the skin.

Type of skin cancer more serious than basal cell carcinoma; often characterized by scaly red papules or nodules.

Abnormal brown-colored or wine-colored skin discoloration with a circular and/ or irregular shape

Change in pigmentation of skin caused by exposure to the sun or ultraviolet light.

Distended or dilated surface blood vessels.

Abnormal, rounded, solid lump above, within, or under the skin; larger than a papule.

An abnormal mass varying in size, shape, and color.

Open lesion on the skin or mucous membrane of the body; accompanied by pus and loss of skin depth and possibly weeping fluids or pus.

AKA "wart";

hypertrophy of the papillae and epidermis.

Small blister or sac containing clear fluid, lying within or just beneath the epidermis.

Hereditary condition that causes hypopigmented spots and splotches on the skin that often appear milky white.

Itchy, swollen lesion that lasts only a few hours; caused by a blow or scratch, the bite of an insect, urticaria (skin allergy), or the sting of a nettle.