ULCERATIVE COLITIS. Ulcerative colitis is an idiopathic chronic inflammatory disease of the colon that follows a course of relapse and remission. In a.

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Presentation transcript:

ULCERATIVE COLITIS

Ulcerative colitis is an idiopathic chronic inflammatory disease of the colon that follows a course of relapse and remission. In a small number of cases, ulcerative colitis is associated with extra- intestinal features. Disease extent can be divided into: Distal disease (left-sided colitis): colitis confined to the rectum (proctitis) or rectum and sigmoid colon (proctosigmoiditis). More extensive disease includes: left-sided colitis (up to the splenic flexure, 40% of patients), extensive colitis (up to the hepatic flexure) and pancolitis (affecting the whole colon, 20% of patients).

AETIOLOGY The aetiology is unknown. Ulcerative colitis is probably an autoimmune condition triggered by colonic bacteria causing inflammation in the gastrointestinal tract. A family history is present in around 25-40% of children; siblings of an individual with Crohn's disease are times more likely than the general population to develop the condition. There is concern that non-steroidal anti-inflammatory drugs (NSAIDs) may increase the risk of relapse or exacerbation of inflammatory bowel disease (IBD) ulcerative colitis and Crohn's disease - but the evidence is not strong. The risk of IBD is increased in women using oral contraceptives but the absolute increase in risk is very low. The risk of ulcerative colitis is decreased in smokers.

Symptoms: The cardinal symptom is bloody diarrhoea. Associated symptoms include colicky abdominal pain, urgency, or tenesmus (a feeling of incomplete defecation with an inability or difficulty to empty the bowel at defecation). Disease limited to the rectum (proctitis) may present with constipation and rectal bleeding. There may be symptoms of systemic upset, including malaise, fever, weight loss and symptoms of extra- intestinal (joint, cutaneous and eye) manifestations. The presentation may mimic gastrointestinal infection and the history should include recent foreign travel in considering the possibility of an infective cause. Recent medication history is also important in considering other possible causes of the presenting gastrointestinal upset.

Signs: Depending on disease severity, the patient may be clearly unwell, pale, febrile and dehydrated. He or she may have a tachycardia and hypotension. Abdominal examination may reveal tenderness, distension or palpable masses. If abdominal tenderness is associated with abdominal distension, then acute admission to hospital is required, as the patient could have toxic megacolon, which is potentially fatal. Other warning signs of potentially severe disease include tachycardia, fever and anaemia.

INVESTIGATIONS It include full blood count, renal function and electrolytes,Endoscopy,FBC, renal function and electrolytes, LFTs, ESR and CRP. Low magnesium and serum albumin levels are sometimes found in ulcerative colitis. Stool culture, including ova, cysts and parasites and also Clostridium difficile toxin. Abdominal imaging Sigmoidoscopy and rectal biopsy Colonoscopy