Which statement best describes IBS as per the material?

• A. It is a functional GI disorder with symptoms like cramping, bloating, and alternating bowel habits.
• B. It is solely caused by infection with bacteria and always involves inflammatory lesions.
• C. It is easily cured by antibiotics.
• D. It is a structural bowel disease with clear visible pathology.

Answer: (A)

The main idea tested is that IBS is a functional gastrointestinal disorder, meaning symptoms are real but there’s no detectable structural or inflammatory disease driving them. IBS commonly presents with cramping abdominal pain, bloating, and changes in bowel habits, which may alternate between constipation and diarrhea, and the pain is often related to meals or stress. Because it lacks visible tissue damage or inflammatory lesions, tests usually don’t show a structural abnormality. That’s why describing IBS as a functional GI disorder with cramping, bloating, and alternating bowel habits is the best match. The other statements imply an infectious, curable by antibiotics, or structurally diseased condition, which do not describe IBS.