Risankizumab-induced paradoxical pustular psoriasis.

A 45-year-old white woman established on risankizumab self-presented to our service with pustular psoriasis affecting 60% of her body surface area. No history of pustular psoriasis was described in the 22 years that she had been diagnosed with psoriasis. This, to our knowledge, is the first case of paradoxical pustular psoriasis associated with risankizumab.