What should you know about ileocolonic Crohn's disease?

The ileum is the final part of the small intestine and the colon is the large bowel. When Crohn's disease affects both, people may have abdominal pain, diarrhoea, urgency, mucus or blood in the stool, tiredness, poor appetite, or weight loss. Some people have symptoms between flares, while others have persistent inflammation without dramatic pain.

Doctors assess the extent and activity of inflammation rather than relying on symptoms alone. Blood tests may look for inflammation or anaemia; stool tests, scans, and endoscopy can show bowel changes and help exclude infection. The findings guide a personalised treatment and monitoring plan.

Arrange a GP consultation for ongoing diarrhoea, recurrent pain, blood in the stool, or unexplained tiredness and weight change. Track stool pattern, urgency, pain, fever, food tolerance, and medicines. Take prescribed medicines as directed and discuss side effects before stopping them. Ask for nutrition advice if eating has become difficult.

Seek urgent help for heavy rectal bleeding, severe abdominal pain, repeated vomiting, a swollen abdomen, inability to pass stool or gas, fainting, confusion, or signs of serious dehydration. Fever with worsening bowel symptoms also warrants prompt medical review.

Ask which parts of the bowel are active, whether there is narrowing or another complication, and which tests will monitor progress. Discuss the treatment goal, food and fluid choices, vaccination or infection concerns, and the action plan for a flare.