pityriasis amiantacea - Health Topics
Pityriasis amiantacea is a condition in which there is excessive scaling of the scalp. Thick silvery or yellowish scales encircle the hair shafts and may bind down tufts of hair. Pityriasis amiantacea is a rare scalp condition that presents with thick waxy scaling that binds down tufts of hair.
Understanding the Context
It was described by Alibert in 1832 as “La Porrigine Amiantacée” after aminate—the scale around the feathers of young birds that has an asbestos-like appearance. 1 Pityriasis amiantacea is an eczematous condition of the scalp in which thick tenaciously adherent scale infiltrates and surrounds the base of a group of scalp hairs. Learn everything you need to know about the scalp condition pityriasis amiantacea, including causes, diagnosis, and treatments. The scales may resemble asbestos, giving rise to the term amiantacea, after the French word for asbestos 'amiante'.
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Key Insights
Conditions causing pityriasis amiantacea include scalp psoriasis, seborrhoeic eczema, atopic eczema and, less commonly, tinea capitis. Pityriasis amiantacea is a scalp condition that causes thick, silvery-white patches to form on the skin. It occurs when there is an excessive buildup of scales on the scalp, leading to a tightly packed, asbestos-like appearance. Learn about pityriasis amiantacea or tinea amiantacea. Causes & symptoms of pityriasis amiantacea.
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How is pityriasis amiantacea diagnosed & best treated Pityriasis amiantacea (PA) is a distinct papulosquamous condition of the scalp characterized by asbestos-like thick scales attached to the hair shaft. Its pathogenesis remains uncertain but represents a reaction pattern of the scalp to various inflammatory diseases. Learn in-depth information on Pityriasis Amiantacea, its causes, symptoms, diagnosis, complications, treatment, prevention, and prognosis.