brown. 1  a dark tertiary color with a yellowish or reddish hue. 2  Offensive. a person whose skin has a light- or dark-brown pigmentation. 3  of the color brown. ( 4 of animals) having skin, fur, hair, or feathers of that color. 5  sunburned or tanned. 6  Often Offensive. 7  to make or become brown.
Ulcerative colitis (Colitis ulcerosa, UC) is a form of inflammatory bowel disease (IBD) that causes inflammation and ulcers in the colon.The disease is a type of colitis, which is a group of diseases that cause inflammation of the colon, the largest section of the large intestine, either in segments or completely.lthough the symptoms of ulcerative colitis can sometimes diminish on their own, the disease usually requires treatment to go into remission. Ulcerative colitis has an incidence of 1 to 20 cases per 100,000 individuals per year, and a prevalence of 8 to 246 per 100,000 individuals.
Ulcerative colitis is a chronic, or long lasting, disease that causes inflammationâirritation or swellingâand sores called ulcers on the inner lining of the large intestine. Ulcerative colitis is a chronic inflammatory disease of the gastrointestinal (GI) tract, called inflammatory bowel disease (IBD). Crohn's disease and microscopic colitis are the other common IBDs. More information is provided in the NIDDK health topics, Crohn's Disease and Microscopic Colitis: Collagenous Colitis and Lymphocytic Colitis. Ulcerative colitis most often begins gradually and can become worse over time. Symptoms can be mild to severe.