Mucous membrane pemphigoid involving the urethra: a case‐series

: Mucous membrane pemphigoid (MMP) is a rare chronic immunobullous disease clinically characterized by recurrent mucosal bullae with subsequent erosion, potential scarring, and loss of function at mucosal sites. Desquamative gingivitis of the oral mucosa is the most common presentation1 . A review of 457 patients with MMP did not include the urethra among mucosal sites2 . Urethral involvement has been cited without characterization in review articles3 . There is one published case of MMP-related phimosis4 and two patients with sterile dysuria5 . We report 4 cases of MMP with urethral scarring to broaden the understanding of this likely under-reported site.