Crohn's diseaseSymptoms

Without treatment, symptoms of Crohn's disease can be constant or may come and go every few weeks or months.

Without treatment, symptoms of Crohn's disease can be constant or may come and go every few weeks or months.

When the symptoms come back, it's called a flare-up or relapse. The periods between flare-ups are called remission.

Common symptoms

The main symptoms of Crohn's disease are:

  • diarrhoea – which may come on suddenly
  • stomach aches and cramps – most often in the lower-right part of your tummy
  • blood in your poo
  • tiredness (fatigue)
  • weight loss

You might not have all these symptoms.

Other symptoms

Some people with Crohn's disease also have:

  • a high temperature (fever)
  • feeling and being sick
  • joint pains
  • sore, red eyes
  • patches of painful, red and swollen skin – usually on the legs
  • mouth ulcers

Children with Crohn's disease may grow more slowly than usual.

When to see a GP

See a GP if you or your child have:

  • blood in your poo
  • diarrhoea for more than 7 days
  • frequent stomach aches or cramps
  • lost weight for no reason, or your child isn't growing as fast as you'd expect

A GP will try to find out what's causing your symptoms and may refer you for tests to check for Crohn's disease.

Page last reviewed: 04/04/2018
Next review due: 04/04/2021