Pemphigus vulgaris after SARS-CoV-2 vaccination: A case with new-onset and two cases with severe aggravation.

Pemphigus may be induced or aggravated by certain drugs and vaccines. People worldwide are currently vaccinated with several SARS-CoV-2 vaccines which may be associated with increased number of aggravated or triggered autoimmune bullous diseases in subjects with an underlying genetic predisposition. Herein, a case of new-onset pemphigus vulgaris (PV) and two cases with aggravation of PV after vaccinations for SARS-CoV-2 are reported.