Toxic Megacolon

Toxic megacolon is a potentially life-threatening condition in which the large bowel becomes dilated. It can be a complication of [inflammatory bowel disease](yourmd:/condition/inflammatory-bowel-disease/).

How is toxic megacolon diagnosed?

What is the treatment for toxic megacolon?



Really bad bloody diarrhoea is the most common symptom of toxic megacolon, but it can also cause:

- tummy pain and tenderness
- tummy swelling
- fever and chills

## How is toxic megacolon diagnosed?

A doctor may suspect you have toxic megacolon based on your symptoms and medical history, but they will usually also look at and feel your tummy.

You will probably need other tests to confirm the diagnosis. These include:

- blood tests
- [X-rays](/health-library/medical-exams/x-ray)
- [a CT scan](/health-library/medical-exams/ct-scan)


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## What is the treatment for toxic megacolon?

Toxic megacolon is a potentially life-threatening condition that needs emergency treatment in hospital. You may be given fluids, antibiotics and/or steroids through a vein in your arm (IV). In some cases, you may also need surgery.


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References

Dr Lauretta Ihonor

Dr Ann Nainan

Article information

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Toxic megacolon is a potentially life-threatening condition in which the large bowel becomes wider than normal. It’s usually a complication of bowel inflammation or infection. Here’s how to tell if you have toxic megacolon and how it’s treated.