- It is type of inflammatory bowel disease.
- It affects colon, rectum mainly, whereas Crohn's can affect any part of the digestive tract.
- There is continuous inflammation of the inner lining of the large intestine as opposed to inflammation in patches in Crohn's Disease..
- Mostly symptoms are similar in both; however, bleeding through rectum is more common in Ulcerative colitis.
- Many Infections of the small intestines can mimic Crohn's.
- They may be of bacterial fungal, viral, or protozoal in origin.
Tuberculosis of intestines:
- Intestinal involvement with mycobacterial infection occurs mainly in the immunosuppressed patient, but may occur in patients with normal immunity.
- Patients present with symptoms of small bowel obstruction and a tender abdominal mass due to involvement of distal ileal and cecal involvement.
Diverticulitis occurs when pouches are formed in the walls of the colon which get infected and inflamed. It has similar clinical presentation. Presence of perianal disease favors diagnosis of Crohns' disease.