Pityriasis
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| Pityriasis | |
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| Specialty | Dermatology |
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
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