disease - an impairment of health or a condition of abnormal functioning

acantholysis - a breakdown of a cell layer in the epidermis (as in pemphigus)

acanthosis - an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis)

acanthosis nigricans, keratosis nigricans - a skin disease characterized by dark wart-like patches in the body folds; can be benign or malignant

acne - an inflammatory disease involving the sebaceous glands of the skin; characterized by papules or pustules or comedones

dermatosis - disorder involving lesions or eruptions of the skin (in which there is usually no inflammation)

eczema - generic term for inflammatory conditions of the skin; particularly with vesiculation in the acute stages

erythroderma - any skin disorder involving abnormal redness

furunculosis - acute skin disease characterized by the presence of many furuncles

impetigo - a very contagious infection of the skin; common in children; localized redness develops into small blisters that gradually crust and erode

jungle rot - skin disorder induced by a tropical climate

keratoderma, keratodermia - any skin disorder consisting of a growth that appears horny

keratonosis - any abnormal condition of the outer skin (epidermis)

keratosis - a skin condition marked by an overgrowth of layers of horny skin

leukoderma - a congenital skin condition characterized by spots or bands of unpigmented skin

lichen - any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks

livedo - skin disorder characterized by patchy bluish discolorations on the skin

lupus - any of several forms of ulcerative skin disease

melanism, melanosis - a condition characterized by abnormal deposits of melanin (especially in the skin)

molluscum - any skin disease characterized by soft pulpy nodules

necrobiosis lipoidica, necrobiosis lipoidica diabeticorum - skin disease marked by thin shiny patches (especially on the legs); often associated with diabetes mellitus

pemphigus - a skin disease characterized by large thin-walled blisters (bullae) arising from normal skin or mucous membrane

prurigo - chronic inflammatory disease of the skin characterized by blister capped papules and intense itching

psoriasis - a chronic skin disease characterized by dry red patches covered with scales; occurs especially on the scalp and ears and genitalia and the skin over bony prominences

rhagades - cracks or fissures in the skin (especially around the mouth or anus)

Saint Anthony's fire - any of several inflammatory or gangrenous skin conditions

seborrhea - a condition in which overactivity of the sebaceous glands causes the skin to become oily

vitiligo - an acquired skin disease characterized by patches of unpigmented skin (often surrounded by a heavily pigmented border)

xanthoma - a skin problem marked by the development (on the eyelids and neck and back) of irregular yellow nodules; sometimes attributable to disturbances of cholesterol metabolism

xanthosis - an abnormal yellow discoloration of the skin