INTRODUCTION
multisystem disorder, psoriasis
ERYTHRODERMIC PSORIASIS, GENERALIZED PUSTULAR PSORIASIS, PSORIASIS, STERILE, PSORIATIC ARTHRITIS, PLAQUE PSORIASIS
Generalized pustular psoriasis (GPP) and erythrodermic psoriasis (EP) are severe and rare forms of psoriasis. In patients with GPP, numerous tiny, sterile pustules cover the entire body and may cause a fatal multisystem disorder.Risankizumab, a humanized immunoglobin G1 monoclonal antibody that specifically inhibits interleukin 23 by binding to its p19 subunit, is approved in Japan to treat plaque psoriasis, GPP, EP, and psoriatic arthritis in adults.