A portion of the skin that has been scraped away
A rare genetic condition characterized by inability to sweat
A superficial fungus infection of the skin of the foot
An area of hardened and thickened skin that is usually seen in palms and soles and is due to pressure and friction
A hard, round, deep, painful inflammation of the subcutaneous tissue that causes necrosis (death) and pus formation (abscess)
Highly contagious disease that initiates in the respiratory system and is caused by vesicular eruptions on the skin that fill with pus, rupture, and form a scab before healing. Also called varicella. Shingles is caused by the latent virus of this disease.
A lesion, usually in oral mucous membrane, caused by type 1 herpes simplex virus, transmitted by oral or respiratory routes. Triggering factors include UV radiation, hormonal changes, and emotional stress. Also called a fever blister.
A collection of sebaceous material and dead cells in the hair follicle and excretory dust of the sebaceous gland. Usually found over the face, chest, and back, and more commonly during adolescence. Also called blackhead or whitehead.
Condition in which tissue below the skin is damaged, but the skin is not broken.
A painful conical thickening of the skin found principally over toe joints and between the toes. It may be hard or soft, depending on the location. Hard ones are usually found over toe joints, and soft ones are usually found between the fourth and fifth toes.
A sac with a distinct connective tissue wall, containing fluid or other material
Particulate matter produced by or remaining after the wearing away or disintegration of a substance or tissue; scales, crusts, and loosened skin
An acute or chronic superficial inflammation of the skin, characterized by redness, oozing, crusting, and scaling. Also called chronic dermatitis.
Redness of the skin cause by an engorgement of capillaries in lower layers of the skin. It occurs with any skin injury, infection, or inflammation
A boil; an abscess resulting from infection of a hair follicle.
Highly contagious disease that initiates in the respiratory system and is caused by the rubella virus and characterized by a rash of small red spots on the skin. Also called rubella.
Localized tumor of the skin and subcutaneous layer that results from an abnormal increase in blood vessels; one type is a portwine stain, a flat, pink, red, or purple lesion present at birth, usually at the nape of the neck
Condition of the skin marked by reddened elevated patches that are often itchy. Most commonly caused by infections, physical trauma, medications, emotional stress, food additives, and certain foods. Also called urticaria.
Superficial skin infection caused by staphylococci or streptococci; most common in children
Within the skin. Also called intracutaneous.
Formation of a hardened growth of tissue.
Wound or irregular tear of the skin
Highly contagious disease that initiates in the respiratory system and is caused by the its virus and characterized by a papular rash on the skin. Also called rubeola.
A round, pigmented, flat, or raised skin area that may be present at birth or develop later. Varying in color from yellow-brown to black. Also called a mole or birthmark.
A small, round skin elevation varying in size from a pinpoint to that of a split pea. One example is a pimple
A tumor on a stem found especially on mucous membranes
Itching, one of the most common dermatological disorders. It may be caused by skin disorders (infections), systemic disorders (cancer, kidney failure), or psychogenic factors (emotional stress)
Beneath the skin; also called hypodermis
Pertaining to a definite area; local/ Also in reference to a medication, applied to the surface rather than ingested or injected
Mass produced by uncontrolled growth of epithelial skin cells; caused by a virus (papillomavirus). Mostly they are noncancerous. Treatment may involve cyrosurgery with liquid nitrogen, electrosurgery, chemical destruction, injections, carbon dioxide laser surgery, surgical excision, and immunotherapy.