Pityriasis amiantacea in Adult
May be localized or generalized. May be an isolated finding or it may occur in association with inflammatory conditions of the scalp. Of these, psoriasis and seborrheic dermatitis are most commonly seen. Other associated conditions include atopic dermatitis and tinea capitis (reported in 11 of 85 patients in one study).
L44.8 – Other specified papulosquamous disorders
238924007 – Pityriasis amiantacea
Differential Diagnosis & Pitfalls
- – many soft, fluffy white or light brown nodules are seen; more commonly affects pubic hair, axillary hair, beard and mustache area. Scalp is occasionally involved.
- – usually affects scalp hair. Small compact black nodular concretions, often multiple on one hair, are seen.
- – long, thin yellow or orange concretions may spiral around hair shafts of axillary or pubic hair.
- – nits adhere to the proximal portions of affected hair. They are small and white. Associated adult lice attach to any portion of the hair shaft.
Drug Reaction Data