pityriasis

Types:

dandruff

a condition in which white scales of dead skin are shed by the scalp

pityriasis alba

common form of pityriasis (usually in children or young adults) characterized by round patches of depigmentation

pityriasis rosea

pityriasis in which an itchy rash develops over the trunk and extremities

Type of:

dermatosis

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