Chinese Expert Consensus on the Clinical Management of Bile Acid Diarrhea (2026 Version)

Chronic diarrhea is a common symptom of the digestive system and also a frequent reason for consultation among patients in gastroenterology outpatient clinics. As one of the common etiologies of chronic diarrhea, bile acid diarrhea (BAD) has a relatively high incidence rate. However, due to the current limitations in physicians' awareness, medical standards, and diagnostic methods, BAD is often underdiagnosed or misdiagnosed; therefore, patients often fail to receive timely and appropriate treatment. To further improve clinicians' understanding and management of BAD, the Chinese Society of Gastroenterology, Chinese Medical Association, on the basis of drawing on domestic and international diagnostic and therapeutic experiences as well as guidelines and consensuses, has organized domestic experts to formulate this expert consensus focusing on the pathogenesis, clinical classification, diagnosis, and management of BAD.