Favorable Response of Pityriasis Amiantacea to Isotretinoin.

Pityriasis amiantacea is a disease of scalp that presents with asbestos-like thick scales attached to the hair shaft proximal portion. It is considered to reaction of scalp to many inflammatory processes, such as psoriasis, seborrheic dermatitis, tinea capitis, atopic dermatitis, lichen planus, bacterial infection, and pityriasis rubra pilaris. The control of underlying disease is important to treat pitryriasis amiantacea, and there are no guidelines. Here, we report a case of a 17-year-old female who had no improvement for the general seborrheic dermatitis treatments, but displayed remarkable results after isotretinoin. (Korean J Dermatol 2012;50(11):1002∼1005)