Two cases of annular erythema without bullous lesions by autoimmune blistering diseases.

Although annular erythema is usually observed as one of the cutaneous manifestations of Sjögren's syndrome or subacute cutaneous lupus erythematosus, autoimmune blistering diseases also present with annular erythema. However, bullous lesions are not always found, and there is a rare type without bullous lesions. We present two cases of autoimmune blistering diseases showing annular erythema without bullous lesions. It is important to perform direct or indirect immunofluorescence examination when we encounter multiple annular erythema.