A skin disease in which the epidermis sheds thin scales as dandruff.
Any skin disease in which the skin develops thin scales.
Any of several skin disorders, including dandruff.
Any of a group of skin diseases typified by the development of fine branlike scales. The term is now used only with a modifying adjective. For instance, pityriasis rosea is a common skin complaint, of unknown cause, in which flat pink oval spots (macules) develop on the trunk and upper parts of the limbs. It beings mainly in young people in spring and autumn and typically starts with a localized patch of spots that precedes the general eruption by about seven days. Pityriasis alba is a very common condition in children and adolescents in which uneven round pale macules appear on the face. This disease may persist until adulthood.
A skin disorder typified by a bran-like desquamation (flaking). There are several varieties including P. alba, rosea, versicolor (fungal caused) and rubra (exfoliative dermatitis).
Technical term for dandruff; characterized by excessive production and accumlation of skin cells.
A collection of skin conditions marked by flaky skin shedding without inflammation.