Ulcerative colitis usually presents with diarrhoea, abdominal discomfort and blood in the stools and sometimes mucous. This can be associated with frequent bowel actions sometimes overnight. As well as a sense of urgency and tenesmus (never fully emptying).
Blood tests and a calprotectin test of the faeces can be helpful in pointing towards the diagnosis. Further tests are required such as gastroscopy and colonoscopy under anaesthetic.
Treatment is usually initially getting the condition under control with anti-inflammatory agents of different kinds. Immunosuppression is often required as a long term maintenance strategy.
You doctor will explain treatment options with you and tailor an approach that is suitable for your child.