Pityriasis rubra pilaris type 1 spontaneously resolving after 20 years


  • Conflict of interest: none declared.

Dr Rachel A. Abbott, Department of Dermatology, Guy’s and St Thomas’ NHS Trust, Lambeth Palace Road, London, SE1 7EH, UK.
E-mail: rachel.abbott@nhs.net


Pityriasis rubra pilaris (PRP) is an uncommon, idiopathic, papulosquamous eruption. We report a longitudinal study of a patient with PRP type 1 who was treated with retinoid therapy for 9 years and whose symptoms resolved spontaneously after 20 years. There are no data in the literature on the disease course of PRP type 1 persisting beyond the usual 3 years. This case highlights both the extreme chronicity of PRP and the possibility of remission after many years of active disease.