Pustular psoriasis is an uncommon form of psoriasis consisting of widespread pustules on an erythematous background, as shown in the image below. Center, as well as Psoriasis, What Is Psoriasis?, Types of Psoriasis, Plaque Psoriasis, and Psoriasis Medications. Pustular psoriasis appears as raised bumps filled with noninfectious pus (pustules). The development of generalized pustular psoriasis is often caused by an infection, abrupt withdrawal of topical corticosteroid treatment, pregnancy, hypocalcemia, medications, or following an irritating topical treatment for plaque psoriasis. Generalized pustular psoriasis (GPP) is an extremely rare type of psoriasis that can present in a variety of forms. Unlike the most general and common forms of psoriasis, GPP usually covers the entire body and with pus-filled blisters rather than plaques.
Pustular psoriasis development after initial ustekinumab administration in chronic plaque psoriasis. Gregoriou S, Kazakos C, Christofidou E, Kontochristopoulos G, Vakis G, Rigopoulos D. PSORIASIS: AN OVERVIEW, AND CHRONIC PLAQUE PSORIASIS. Psoriasis: generalised pustular psoriasis (syn. von Zumbusch psoriasis).