Pemphigus erythematosus is a variant that just affects the face and overlaps with lupus erythematosus. It is also known as Senear-Usher syndrome.
Fogo selvagem (Portuguese for “wild fire”; also known as endemic pemphigus and Brazilian pemphigus) which may be triggered by exposure to one or more environmental antigens (b).
Both pemphigus vulgaris and pemphigus foliaceus can be either induced or triggered (i.e., latent disease unmasked) by certain drugs. (Pemphigus that continues after a patient stops using a drug is referred to as triggered, whereas lesions that clear soon after withdrawal are referred to as induced). Although drug-related pemphigus is uncommon, its possibility must be excluded in all patients with newly diagnosed disease. The clinical, histological and immunofluorescence abnormalities of drug-induced pemphigus are similar to those of the idiopathic variety. For a list of drugs please see following a table with known implicated agents.