Pityriasis alba is a common skin condition mostly occurring in children and usually seen as dry, fine-scaled, pale patches on the face. It is self-limiting and usually only requires use of moisturizer creams. The condition is so named for the fine scaly appearance initially present (pityriasis) and the pallor of the patches that develop (while `a....
(pit″ĭ-ri´ә-sis al´bә) a type usually seen on the faces of children and adolescents, with patchy scaling and hypopigmentation.
Type: Term Definitions: 1. patchy hypopigmentation of the skin resulting from mild dermatitis.
Pityriasis alba: A mild form of eczema that occurs in young children and adolescents and produces mild patchy lightening and slight scaling of the skin of the face (particularly over the cheeks and around the mouth), the shoulders, or trunk. The word 'pityriasis' was used by the physician Hippocrates in ancient Greece to describe the scruffy appear...
[n] - common form of pityriasis (usually in children or young adults) characterized by round patches of depigmentation
a common childhood or adolescent disorder in which there are pale, scaly patches on the skin of the face 
noun common form of pityriasis (usually in children or young adults) characterized by round patches of depigmentation
An idiopathic hypopigmentary condition appearing as white patches with indistinct margins covered with a fine scale.