This is according to the authors of the 2019 American Gastroenterology Society UC guideline for adult patients. The initial presentation of new UC is characterised by symptoms of an inflamed rectum, namely, bleeding, urgency and tenesmus (a sense of pressure). The condition may present at any time and at all ages but there is a predominant age distribution of onset that peaks between ages 15 and 30 years.

An emerging goal in UC management is that of mucosal healing, but to achieve this, understanding of the most effective diagnostic, treatment, and preventive strategies is required.

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