[Diagnostic and therapeutic difficultes in pityriasis rubra pilaris--case report].

Pityriasis rubra pilaris Devergie is a very rare papulosquamosus disease which has chronic course and still unclear etiology. Already, we know that this dermatosis occurs as often in male as in female, can be present in each age and has genethics background. Diagnostic and especially therapy of those skin diseases is very difficult and can make a lot of problems not only dermatologist. This paper presents the case of a 48-year-old man with diagnosed and histological confirmed Pityriasis rubra pilaris Devergie. Advantages of retinoids therapy were also discussed.