Crohn’s disease may begin with diarrhea and abdominal pain, often in the lower right section of your belly. You may also experience cramping, nausea, vomiting, rectal bleeding, fever, and weight loss. In more severe cases, bleeding may be heavy and can cause iron-deficiency anemia. If you could look inside your small and large intestine, the walls might look pebbled if you have Crohn's disease—a sign of deep ulcers that can extend through many layers of your intestinal wall. These ulcers can become infected. They can also heal and form scars that can narrow or even block sections of your intestinal tract.

• Untreated ulcers can tunnel into other sections of your intestines or even into other organs such as your bladder.
• Kids and teens with Crohn’s disease may have growth delays because their intestines cannot absorb enough nutrients.
• People with Crohn’s disease may also have arthritis, skin problems, inflammation in the eyes or mouth, kidney stones, gallstones, or liver problems.
• Treating this digestive disorder with immune-system soothing drugs often helps ease these complications.
• Medication can help keep Crohn’s disease in remission, but most people with it eventually need bowel surgery to remove damaged sections.

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