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Dr. Elizabeth Squirell · Gastroenterologist · Kingston Health Sciences Centre

What is IBD?

Crohn's disease and ulcerative colitis explained in plain words. What they are, what they are not, common symptoms, and what a flare is.

Key points

  • IBD is a long-term illness. The two main types are Crohn's disease and ulcerative colitis.
  • IBD is not IBS. It is not contagious. It is not caused by stress or by one food, and it is not your fault.
  • Call your IBD team if you have new blood in your stool, more trips to the toilet, or belly pain that does not go away. These can be signs of a flare.
  • Tell your team about sore or swollen joints, a red or painful eye, new skin sores, or yellow skin. IBD can affect more than the gut.
  • Keep taking your IBD medicine when you feel well, unless your team tells you to change it.
  • Make a flare plan with your team, so you know what to do and who to call.
  • With good care, many people with IBD work, study, travel and raise families.

Go to emergency or call 911 if you have

  • Heavy bleeding from your bottom, or you feel faint
  • Severe belly pain that does not settle
  • A fever with belly pain
  • Vomiting, and you cannot keep fluids down

Try “pregnancy”, “Mayo”, “calprotectin” or “VARSITY”.