Pityriasis rubra pilaris (Devergie's disease) in a COVID-19 patient

Pityriasis rubra pilaris (Devergie's disease) is an idiopathic, papulosquamous inflammatory dermatosis characterized by progressive erythrodermia. The etiology of the disease is unknown, and most cases occur sporadically. Viral infections, impaired vitamin A metabolism, medications, autoimmune reactions, and malignancies are most common triggering factors. The diagnosis of Devergie's disease is based on the clinical manifestations of the disease and the results of a skin histological examination. The present paper discusses a clinical case of pityriasis rubra pilaris that occurred in a COVID-19, 40-year-old woman. For the purpose of differential diagnosis of pitiriasis with atopic dermatitis, erythrodermic form of psoriasis, generalized form of urticaria, it is necessary to perform immunohistochemical studies to identify the proliferation of immunocompetent cells. Based on the described clinical case, it seems possible to recommend testing for SARS-CoV-2 if a patient has Devergie's disease against the background of fever and intoxication syndrome.