Pityriasis rubra pilaris type IV-associated arthritis treated with adalimumab

Pityriasis rubra pilaris (PRP) is a very rare disease from the hyperkeratotic papulosquamous disorder group. The rheumatologic manifestations of PRP are extremely rare and less known to clinicians than those of psoriasis. An interesting case of inflammatory arthritis in the hand of an adolescent patient who was successfully treated with adalimumab and compatible with the diagnosis of type IV circumscribed juvenile PRP is presented in the light of the literature.

Automated summary

Pityriasis rubra pilaris (PRP) is a rare hyperkeratotic papulosquamous disorder. Rheumatologic manifestations of PRP are less known and rare compared to psoriasis. This article presents an interesting case of inflammatory arthritis in an adolescent patient successfully treated with adalimumab, supporting the diagnosis of type IV circumscribed juvenile PRP according to the literature.