Diagnosis and treatment of small intestinal bacterial overgrowth: seven medical cases report

Small intestinal bacterial overgrowth is defined as the presence of the formation of abnormally large bacterial colonies in the small intestine. The common symptom of small intestinal bacterial overgrowth includes abdominal bloating, diarrhea, constipation, abdominal pain, and flatulence. Breath testing is generally recognized as a useful, non-invasive tool for diagnosing small intestinal bacterial overgrowth. Therefore, the author would like to introduce seven medical cases of diagnosis and treatment of small intestinal bacterial overgrowth using lactulose breath test.