From Wikipedia, the free encyclopedia
Medical condition
Pityriasis commonly refers to flaking (or scaling)
[1] of the
skin. The word comes from the Greek πίτυρον '
bran'.
Classification
Types include:
-
Pityriasis alba, dry, fine-scaled, pale patches on the face
-
Pityriasis lichenoides chronica, caused by a hypersensitivity reaction to infectious agents
-
Pityriasis lichenoides et varioliformis acuta, a disease of the immune system
-
Pityriasis rosea, a type of skin rash
-
Pityriasis rubra pilaris, reddish-orange patches (Latin: rubra) on the skin
-
Pityriasis versicolor, a skin eruption on the trunk and proximal extremities, usually caused by a fungus
-
Dandruff, historically called Pityriasis capitis
-
Pityriasis amiantacea, condition of the scalp in which thick tenaciously adherent scale infiltrates and surrounds the base of a group of scalp hairs
See also
References
External links