<prompt> A 36-year female complaints of abdominal pain constipation since 5 years. She has on off rectal bleed when she tries to defecate forcefully. The most probable diagnosis is:Ulcerative colitisCrohns diseaseTuberculous intestineIrritable bowel syndrome  <response>: The findings are consistent with irritable bowel syndrome. Crohns disease would typically have perianal fistulae while ulcerative colitis has periods of acute disease and quiescent periods: the acute periods are severe and may lead to significant impairement. 