There are some possibilities.
1. Crohn's disease: It is caused by abnormalities of the body's immune system in which the body is inappropriately making antibodies
and chemicals that attack the colon
2. microscopic colitis: inflammation of the colon that is only visible when the colon's lining is examined under a microscope.
3. irritable bowel syndrome: These individuals may have symptoms that mimic colitis such as diarrhea, abdominal pain, and mucous in stool. Nevertheless, there is no inflammation of the colon (not even microscopic colitis) in patients with IBS. The cause of symptoms in IBS is not clearly known; it may be caused by either abnormal motility (abnormal contractions) of the intestinal muscles or abnormally sensitive nerves in the intestines (visceral hypersensitivity).
4. Zollinger-Ellison syndrome: is a complex condition in which one or more tumors form in your pancreas, the upper part of your small intestine (duodenum
) or the lymph nodes adjacent to your pancreas. These tumors, called gastrinomas, secrete large amounts of the hormone gastrin, which causes your stomach to produce too much acid. The excess acid, in turn, leads to peptic ulcers. It is a rare disease.
5. Colon tumor
You should see your primary care doctor to have a blood test, a fecal occult blood test, and colonoscopy. You should also have upper GI endoscopy for the heartburn.