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What Is Crohn's Disease?

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Crohn's disease causes swelling, inflammation, and irritation in the digestive tract. It's a form of inflammatory bowel disease (IBD). It often affects the small intestine and the colon. All layers of the lining of the digestive tract may be affected.

While this disease has no known cure, the symptoms can be treated. Follow your healthcare provider’s advice to help manage your symptoms. Also stay away from foods that cause irritation.

Outline of man showing gastrointestinal system. Cross section of colon showing Crohn's disease.


Symptoms of Crohn's disease

  • Belly pain and cramping

  • Urgent need to move the bowels or a feeling of not fully emptying them

  • Constipation

  • Fever and chills

  • Loss of appetite, possible weight loss

  • Bloody or persistent diarrhea

  • Nausea or vomiting

  • Joint pain

  • Skin rashes and ulceration

  • Eye inflammation

  • Severe tiredness (fatigue)

  • Anus problems, such as tears or ulcers

  • Infection (abscess) or abnormal opening in the digestive tract (fistula)


Your treatment choices

Your healthcare provider will talk with you about your treatment choices. They may include medicines, lifestyle changes, surgery, or a combination of these. Treatment helps you stay as active as you want to be. Keep in mind that Crohn's is a chronic illness with no known cure. Treatment may ease symptoms. And you can still live a full life.


Medicines

Certain medicines can help your symptoms, such as:

  • Medicines to control your body's immune system, such as older medicines 6-mercaptopurine or azathioprine, and newer oral medicines called small molecules.

  • Corticosteroids (for short-term use) to help reduce inflammation

  • Antibiotics to fight bacteria, if there is an infection

  • Biologics (anti-TNF and others), which are injected either through an IV or directly into the skin


Lifestyle changes

Certain foods can make symptoms worse. You may need to change what you eat. Don't eat foods that make your symptoms worse. These foods vary from person to person. But high-fiber foods (such as fresh vegetables) and high-fat foods (such as dairy products and red meat) cause symptoms in many people. Keep track of foods that cause you problems. Consider food sensitivity testing if you are unsure what foods to stay away from.

To a lesser degree, stress may make symptoms worse. Reducing stress may help. Relaxation exercises, certain medicines, and deep breathing can help you control stress. Your healthcare provider may be able to tell you more about these.


If surgery is needed

Surgery may help control Crohn's, easing your symptoms. Surgery can remove a severely affected part of the digestive tract. If this is a choice for you, talk with your healthcare provider. Keep in mind that surgery isn't a cure for Crohn's. You will still need to see your healthcare provider after surgery for follow-up care and monitoring. You may need more treatment and testing. 

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© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

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