PT - JOURNAL ARTICLE AU - Sheppard, Rachel AU - Evanson, Benjamin AU - Campbell, Iona AU - Shand, Alan TI - Chronic diarrhoea, weight loss and a positive anti-tissue transglutaminase antibody: A case report of olmesartan-induced enteropathy AID - 10.1136/bcr-2023-255407 DP - 2024 May 01 TA - BMJ Case Reports PG - e255407 VI - 17 IP - 5 4099 - http://casereports.bmj.com/content/17/5/e255407.short 4100 - http://casereports.bmj.com/content/17/5/e255407.full SO - BMJ Case Reports2024 May 01; 17 AB - Olmesartan is an angiotensin II receptor blocker licensed for the treatment of hypertension. It can cause a sprue-like enteropathy (SLE), characterised by chronic diarrhoea, weight loss and villous atrophy. Transiently raised anti-tissue transglutaminase (ATTG) antibody has also been rarely reported in the literature.We describe the case of a woman in her mid-50s, who presented with a history of intermittent loose stools over 1 year, associated with significant weight loss. She had two marginally raised serum ATTG antibody tests during her work-up.After extensive investigations, she was diagnosed with olmesartan-induced enteropathy. On subsequent follow-up, her symptoms had resolved with cessation of her olmesartan therapy.This case adds to existing literature, highlighting the importance of considering olmesartan as a possible differential diagnosis for SLE. It also reports the presence of a raised ATTG antibody which is infrequently reported in this context.