Microscopic Colitis with Escitalopram Use and New Onset Vitiligo

Microscopic colitis is a common cause of chronic diarrhea, particularly in patients with autoimmune disorders. Colonic mucosa appears normal and only shows inflammation on histological examination. There are two histological variations of microscopic colitis. It has been associated with several drug classes, and certain drugs are associated with one variation or another. In this case report, we discuss the case of a patient who is on a drug not previously associated with her variation of microscopic colitis and who has an autoimmune condition whose relationship to microscopic colitis is not well studied. We aim to outline the potential triggers for the disease and to call for further studies regarding how certain drugs and/or autoimmune disorders trigger it in order to further our understanding and improve management.