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Ulcerative colitis is a chronic disorder that affects the digestive system. This condition is characterised by abnormal inflammation of the inner surface (epithelium) of the rectum and colon. The rectum and colon make up most of the length of the large intestine. The inflammation usually causes open sores (ulcers) to develop in the large intestine. Ulcerative colitis usually appears between the age of 15 and 30, although it can develop at any age. The inflammation tends to flare up multiple times throughout a person's life, which causes recurring signs and symptoms.

Description

Ulcerative colitis is a chronic disorder that affects the digestive system. This condition is characterised by abnormal inflammation of the inner surface (epithelium) of the rectum and colon. The rectum and colon make up most of the length of the large intestine. The inflammation usually causes open sores (ulcers) to develop in the large intestine. Ulcerative colitis usually appears between the age of 15 and 30, although it can develop at any age. The inflammation tends to flare up multiple times throughout a person's life, which causes recurring signs and symptoms.

The most common symptoms of ulcerative colitis are cramping abdominal pain and frequent diarrhea, often with blood, pus, or mucus in the stool. Other signs and symptoms include nausea, loss of appetite, bowel urgency, fatigue, and fevers. Chronic bleeding from the inflamed and ulcerated intestinal tissue can cause a shortage of red blood cells (anaemia) in some affected individuals. People with this disorder have difficulty absorbing enough fluids and nutrients from their diet and often experience weight loss. Affected children usually grow more slowly than normal. Less commonly, ulcerative colitis causes problems with the skin, joints, eyes, kidneys, or liver, which are most likely due to abnormal inflammation.

Toxic megacolon is a rare complication of ulcerative colitis that can be life-threatening. Toxic megacolon involves a widening (dilation) of the colon and an overwhelming inflammatory response. Ulcerative colitis also increases the risk of developing colon cancer, especially in people whose entire colon is inflamed and in those who have had ulcerative colitis for 8 years or more.

Ulcerative colitis is one common form of inflammatory bowel disease (IBD). Another type of IBD, Crohn's disease, also causes chronic inflammation of the intestines. Unlike ulcerative colitis, which affects only the inner surface of the large intestine, Crohn's disease can cause inflammation in any part of the digestive system, and the inflammation extends deeper into the intestinal tissue.

Inheritance patterns

The source lists the following possible inheritance patterns: Pattern unknown. More than one pattern can apply in different cases.

Other names

Colitis gravis

Idiopathic proctocolitis

Inflammatory bowel disease, ulcerative colitis type

UC

Related patient information and medicines

Ulcerative colitis

Patient information leaflet

Ulcerative colitis

Ulcerative colitis is a disease where inflammation develops in the colon and the rectum (the large intestine). The most common symptom when the disease flares up is diarrhoea mixed with blood. Ulcerative colitis is a disease of the colon and the rectum (the large intestine). Ulcers that occur in ulcerative colitis develop in the large intestine.

Beclometasone tablets for ulcerative colitis

Medicine leaflet

Beclometasone tablets for ulcerative colitis

Beclometasone belongs to a class of medicines known as corticosteroids (m... About beclometasone tablets for ulcerative colitis Type of medicine A corticosteroid, also commonly called an oral steroid Used for Ulcerative colitis (in adults) Also called Beclomethasone (in US); Clipper® Available as Modified-release tablets (made to pass through your.

Olsalazine for ulcerative colitis

Medicine leaflet

Olsalazine for ulcerative colitis

About olsalazine Type of medicine Aminosalicylate Used for Ulcerative colitis in adults and in children aged over 12 years Available as Capsules and tablets Ulcerative colitis causes inflammation of the large intestine. This can lead to damage to the lining of your intestine (ulceration) and bleeding, and causes symptoms of tummy (abdominal) pain.

Rectal bleeding

Patient information leaflet

Rectal bleeding

See the separ... Ulcerative colitis and other forms of colitis Ulcerative colitis (UC) is a disease where inflammation develops in the colon and rectum. A common symptom when the disease flares up is diarrhoea mixed with blood. The blood comes from ulcers that develop on the lining of the inflamed gut. There are other rare causes of inflammation.

Inflammatory bowel disease

Patient information leaflet

Inflammatory bowel disease

Inflammatory Bowel Disease (IBD) is a term used to descr... Ulcerative colitis only affects the intestinal wall of the colon and rectum, whereas Crohn's disease can affect any part of the gut. Surgery Ulcerative colitis only affects the colon and rectum so an operation to remove the large bowel (total colectomy) will cure the condition. Ulcerative.

Steroids

Patient information leaflet

Steroids

Steroid medicines are used for many different medical conditions. Ulcerative colitis . Arthritis. These should only ever be started by a specialist eye doctor (ophthalmologist) who will usually have used a machine called a slit lamp to look into the bac... Rectal foam or suppositories to treat ulcerative colitis (proctitis) or for Crohn's disease.

Further reading and references

Article history

The information on this page is written and peer reviewed by qualified clinicians.
  • 28 Aug 2023 | Latest version
  • 1 Aug 2023 | Originally published

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