Mucous Membrane Pemphigoid By Daniel M Peraza, MD, Geisel School of Medicine at Dartmouth University Reviewed / Revised Jan 2022 | Modified Sep 2022 View Patient Education Diagnosis Prognosis Treatment Mucous membrane pemphigoid is the designation given to a heterogeneous group of rare chronic autoimmune disorders that tend to cause waxing and waning bullous lesions of the mucous membranes, often with subsequent scarring and morbidity.