Colitis is a type of inflammatory bowel disease (IBD) that causes inflammation and irritation in the lining of the colon and rectum. This condition can be caused by a variety of factors, including autoimmune disorders, infections, and genetics. Symptoms of colitis can include abdominal pain, diarrhea, blood in the stool, and weight loss. Treatment for colitis typically involves medication, changes in diet, and in some cases, surgery. Researchers are studying the underlying causes of colitis and developing new therapies to better manage and treat this condition.