How Is Ulcerative Colitis Diagnosed?

A variety of diagnostic procedures and lab tests are used to distinguish ulcerative colitis from other conditions. First, your doctor will review your medical history and perform a complete physical exam. One or more of the following tests may be ordered:

• Endoscopy, such as colonoscopy or proctosigmoidocopy
• Blood tests
• Stool samples
• X-rays

Source: http://www.webmd.com

What Causes Ulcerative Colitis?

The cause of ulcerative colitis remains unknown, but some researchers believe that an abnormal response of the immune system is involved in the development of the disease. A viral or bacterial infection of the colon may trigger the uncontrolled inflammation associated with ulcerative colitis.

Source: http://www.webmd.com