How long does pityriasis rubra pilaris last?
The classic forms typically resolve in 3 to 5 years. Atypical adult and atypical juvenile PRP have more of a dry, red rash, most commonly on the lower legs, and can last many years.
Does pityriasis rubra pilaris come back?
Types of pityriasis rubra pilaris
The symptoms usually go away after a few years. In some rare cases, the symptoms come back later. Atypical adult onset PRP also begins in adulthood. However, the symptoms may last more than 20 years.
Is PRP an autoimmune disease?
Patients with PRP with joint and muscle involvement described in the literature had an unremarkable immunological profile [2,5]. The widely reported association of PRP with autoimmune disorders may point to an underlying abnormal immune response to antigenic triggers or microbial pathogens .