Ulcerative Colitis or chronic ulcerative colitis is a chronic condition in which the large intestine (or bowel) has inflammation and ulcers, which results in spells of bloody diarrhea, fever, and abdominal cramps. It usually begins between the ages of 15 and 30 years. However, it can develop much later. The disease usually begins in the rectum or lower part of the large intestine, and then tends to spread to higher areas. Although the cause is unknown, genetics (or heredity) and overactive immune reactions may contribute.
Symptoms of attacks, which may be sudden and severe, can include severe diarrhea, high fever, and severe abdominal pain. The further up the intestine the disease goes, the greater the likelihood of having loose stools. Complications may include hay bleeding, resulting in iron deficiency anemia, and loss of normal function of the intestine. People with extensive ulcerative colitis for a long time have an increased risk of developing cancer of the colon, arthritis, inflammation of the eyes and, sometimes, other areas of the body.