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Abdominal pain and bloody diarrhea are the most common warning signs of UC, and can range from mild and intermittent to severe and chronic. The pain of UC is quite common and can significantly impact quality of life. It may be associated with bowel movements, such as constipation and/or the cramping that comes with diarrhea, or eating specific foods.
Ongoing inflammation along with ulcers and abscesses in the intestines are additional common causes of pain. Scarring in the lining of the intestinal tract (called adhesions and strictures) can lead to painful obstructions. Pain may occur in different areas such as the abdomen or rectal area, depending where the inflammation is located. For example, people may experience moderate to severe pain on the left side of the abdomen if the UC affects the rectum and the lower segment of colon. If the UC affects the entire colon, severe abdominal pain along with diarrhea, cramps and extensive weight loss may occur.