Ulcerative colitis is an inflammatory bowel disease (IBD) that causes long-lasting inflammation and ulcers (sores) in your digestive tract. Ulcerative colitis affects the innermost lining of your large intestine (colon) and rectum. Symptoms usually develop over time, rather than suddenly.
Ulcerative colitis can be debilitating and sometimes can lead to life-threatening complications. The disease can affect people of any age. But most people who have it are diagnosed before the age of 30.
- Diarrhea, often with blood or pus
- Abdominal pain and cramping
- Rectal pain
- Rectal bleeding — passing small amount of blood with stool
- Urgency to defecate
- Inability to defecate despite urgency
- Weight loss
- In children, failure to grow
The disease can also cause other problems, such as joint pain, eye problems, or liver disease.
Colonoscopy with biopsy is generally used to diagnose ulcerative colitis.