An important symptom of ulcerative colitis is inflammation, which can occur in different parts of the body. It is most likely to happen in the colon, and it can extend to other organs including the upper digestive tract. Inflammation is triggered mostly by irritation to the affected areas and causes a wide range of symptoms to appear. Pain, for example, can be felt around the affected areas. Inflammation can also cause more worrying symptoms, for example, blockages in the smaller intestine. You may also experience bloating as a result. Consult your doctor for information on how to reduce inflammation.