Ulcerative colitis (UC) is most commonly seen in late adolescence and early adulthood although it may occur at any age. A small peak in incidence after the fifth decade has been observed in some populations (1).
The condition affects both males and females equally (1).
There is an annual incidence of 5-8/100,000 in most communities of Celtic and Anglo-Saxon origin in north-western Europe, North America and New Zealand. The prevalence of symptomatic disease in north-western Europe is 70-150/100,000. This disease is very uncommon in Asia and Africa. As in Crohn's disease, familial clustering may be seen.
NICE state (2):
Reference:
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