We describe five patients who share clinical, histopathological, therapeutic response, and immunofluorescence criteria for both dermatitis herpetiformis and pemphigoid. Furthermore, one patient who was studied over a period of time changed from fulfilling all the criteria of dermatitis herpetiformis to those of bullous pemphigoid.
Honeyman JF, Honeyman A, Lobitz WC, Storrs FJ. The Enigma of Bullous Pemphigoid and Dermatitis Herpetiformis. Arch Dermatol. 1972;106(1):22-25. doi:10.1001/archderm.1972.01620100010002