<p>Our paper aims<strong> </strong>to describe the epidemiological, clinical, and therapeutic aspects of patients with severe psoriasis in Rabat Morocco. We carried out a single-center retrospective, transversal study on 100 cases of severe psoriasis collected between January 2011 and December 2020 at the university hospital ibn Sina Rabat. We included patients with: pustular, erythrodermic, arthropathic forms, and generalized psoriasis vulgaris with a skin surface area>10% and a PASI>15.</p>