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Crohn's disease causes inflammation of the digestive system. It is one of a group of diseases called inflammatory bowel disease. Crohn's can affect any area from the mouth to the anus. It often affects the lower part of the small intestine called the ileum.

The cause of Crohn's disease is unknown. It may be due to an abnormal reaction by the body's immune system. It also seems to run in some families. It most commonly starts between the ages of 13 and 30.

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Illustration of the digestive system
Results 1 - 10 of 384 for Crohn disease
  1. Crohn's Disease (National Library of Medicine)  
    Crohn's disease causes inflammation of the digestive system. It is one of a group of diseases called inflammatory ... small intestine called the ileum. The cause of Crohn's disease is unknown. It may be due to an ...
  2. Crohn's Disease Interactive Tutorial (Patient Education Institute)  
    Crohn’s Disease Introduction Crohn's disease is one of the 2 most common inflammatory bowel diseases or IBD. The ... not get stuck together in the abdominal cavity. Crohn’s Disease Inflammation caused by Crohn's disease can affect the ...
  3. Inflammatory bowel disease - Crohn's disease; Regional enteritis; Ileitis; Granulomatous ileocolitis; IBD- Crohn's disease ... The exact cause of Crohn's disease is unknown. It occurs when your ... destroys healthy body tissue (autoimmune disorder). When parts ...
  4. Crohn's Disease From the National Institutes of Health (National Institute of Diabetes and Digestive and Kidney Diseases)  
    ... Z List of Topics and Titles : Crohn's Disease Crohn's Disease On this page: What is Crohn's disease? What ... through Research For More Information Acknowledgments What is Crohn's disease? Crohn's disease is a chronic, or long lasting, ...
  5. Learning about Crohn's Disease From the National Institutes of Health (National Human Genome Research Institute)  
    ... genetic terms used on this page. Learning About Crohn's Disease What is Crohn's disease? What are the symptoms ... disease Additional Resources for Crohn's Disease What is Crohn's disease? Crohn's disease, an idiopathic (of unknown cause), chronic ...
  6. Genetics Home Reference: Crohn disease From the National Institutes of Health (National Library of Medicine)  
    ... PubMed Recent literature OMIM Genetic disorder catalog Conditions > Crohn disease On this page: Description Genetic changes Inheritance Diagnosis ... names Glossary definitions Reviewed August 2007 What is Crohn disease? Crohn disease is a complex, chronic disorder that ...
  7. What I Need to Know about Crohn's Disease Easy-to-Read From the National Institutes of Health (National Digestive Diseases Information Clearinghouse)  
    ... Crohn's Disease What I need to know about Crohn's Disease On this page: What is Crohn's disease? Who ... Pronunciation Guide For More Information Acknowledgments What is Crohn's disease? Crohn’s disease is a disease that causes inflammation , * ...
  8. What Is Crohn's Disease? (Crohn's & Colitis Foundation of America)  
    ... What are Crohn's & Colitis? > What is Crohn’s Disease? Crohn’s Disease is a Chronic Condition By understanding your body ... live a full and rewarding life What is Crohn’s Disease? Email Print + Share Named after Dr. Burrill B. ...
  9. Surgery for Crohn's Disease and Ulcerative Colitis (Crohn's & Colitis Foundation of America)  
    ... Crohn's Disease & Ulcerative Colitis Go Back Surgery for Crohn's Disease & Ulcerative Colitis Email Print + Share ( Disclaimer: Surgery information ... helps you to learn what to expect. About Crohn’s disease and ulcerative colitis Crohn’s disease and ulcerative colitis ...
  10. Crohn's Disease and Ulcerative Colitis: Emotional Factors (Crohn's & Colitis Foundation of America)  
    ... Ulcerative Colitis: Emotional Factors Q & A Go Back Crohn’s Disease and Ulcerative Colitis: Emotional Factors Q & A Email ... WHAT IS THE CAUSE OF ULCERATIVE COLITIS AND CROHN’S DISEASE? The origin of IBD is still unknown. It ...
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