Crohn's disease – Crohn’s & Colitis Australia (CCA)

Crohn's disease causes inflammation of your bowel. The disease most often affects the end part of your small bowel, called the terminal ileum. However, it can affect any part of your bowel.
Crohn's disease causes your bowel wall to thicken, which can block food from passing through. The affected area of your bowel can also fail to absorb nutrients from your food.

Crohn's disease at the terminal ileum.
Your symptoms should improve. Your doctor may also be able to reduce or stop your medication.
Inflammation can be treated using medication such as mesalazine, steroids, azathioprine and infliximab. These have side effects and your doctor will discuss them with you.
Sometimes a narrowing of your bowel can be stretched by a procedure that uses a flexible telescope and a balloon dilator.
The operation is performed under a general anaesthetic.
Your surgeon will make a cut on your abdomen and remove the diseased part of your bowel.
Your surgeon will usually join the ends of your bowel back together. If they are unable to join the ends of your bowel, they will make a colostomy or ileostomy (your bowel opening onto your skin).
If you smoke, stopping smoking now may reduce your risk of developing complications and will improve your long-term health.
Try to maintain a healthy weight. You have a higher risk of developing complications if you are overweight.
Regular exercise should help to prepare you for the operation, help you to recover and improve your long-term health. Before you start exercising, ask the healthcare team or your GP for advice.
Speak to the healthcare team about any vaccinations you might need to reduce your risk of serious illness while you recover. When you come into hospital, practise hand washing and wear a face covering when asked.
The healthcare team will try to reduce the risk of complications.
Any numbers which relate to risk are from studies of people who have had this operation. Your doctor may be able to tell you if the risk of a complication is higher or lower for you. Some risks are higher if you are older, obese, you are a smoker or have other health problems. These health problems include diabetes, heart disease or lung disease.
Some complications can be serious.
You should be able to go home after 3 to 10 days.
It may take up to 3 months for you to recover fully. Most people feel much better after the diseased part of their bowel has been removed.
Regular exercise should help you to return to normal activities as soon as possible. Before you start exercising, ask the healthcare team or your GP for advice.
Crohn's disease sometimes comes back and affects another part of your bowel or a part near to where the join was made.
Crohn's disease causes inflammation of your bowel. Surgery is usually recommended if medication fails to improve your symptoms.
IMPORTANT INFORMATION
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Last reviewed: January 2026










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