Colitis is an inflammatory disease of the colon. It may be an acute and self-limited condition, or a long-term condition. Colitis can be of various kinds such as ulcerative colitis, lymphocytic colitis, collagenous colitis, ischemic colitis, etc. The symptoms of colitis depend on the underlying cause of the disease, its stage and severity. These may include recurring bloody diarrhea, mild to severe abdominal pain, abdominal tenderness, flatulence, poor appetite, fatigue, etc. Severe symptoms such as irregular or fast heartbeat, fever and shortness of breath may also occur. When viewed using colonoscopy, ulcers, colonic mucosal erythema and bleeding may be observed. A review of the patient's medical history, physical examination and laboratory tests such as CBC, stool culture, stool ova, etc. are performed to diagnose colitis. Medical imaging and imaging of the rectum also help in making such diagnoses. The cause and extent of bowel damage due to colitis can be determined through a biopsy. Medications generally prescribed to treat colitis include immunosuppressant or anti-inflammatory drugs. This book contains some path-breaking studies in colitis. Also included herein is a detailed explanation of the various symptoms of colitis, and their management strategies. This book is meant for students who are looking for an elaborate reference text on colitis.