From
http://www.drugs.com/CG/CROHN_S_DISEASE.html CROHN'S DISEASE
GENERAL INFORMATION:
What is it?- Crohn's disease is a long-term inflammatory (in-flah-muh-tor-e) disease of the gastrointestinal (gas-tro-in-tes-tih-null) system. This system may also be called the GI or digestive system. It includes the mouth, esophagus (e-sof-uh-gus), stomach, small and large intestines, and anus (rear end).
- Crohn's disease causes the lining of the intestines to become reddened, swollen, or bleed. This happens most often in the lining (inner layer) of the colon and ileum. The ileum is the lower part of the small intestine. The colon is part of the large intestine where BM is formed. Sometimes Crohn's disease is found in the lining of the mouth, esophagus, or stomach. If the disease is not controlled, you may get tears, sores, or holes in or around your intestines.
- This disease has quiet (remission) and active (relapse) periods. The quiet period is when you have few or no symptoms of the disease. This period may last months or years. The active period is when you have symptoms. Crohn's disease is more common in white people ages 15 to 30 years. There is no cure for Crohn's disease. But its symptoms can usually be treated with medicines or surgery.
Causes: It is not known what causes Crohn's disease. But it may be caused by a problem in the immune (ih-mewn) system. This system is the part of your body that fights infection. Germs called bacteria (bak-teer-e-uh) or viruses may also cause Crohn's disease. Having a family history of Crohn's disease may make it more likely for you to have this illness. Stress and how you deal with it may cause you to have a relapse of Crohn's disease.
Signs and Symptoms: You may have any of the following signs and symptoms.
- Abdominal (belly) pain that comes and goes. This pain may be more common in the lower right area of your abdomen. The pain may be worse after eating, especially after eating or drinking milk products, such as milk or cottage cheese.
- Bleeding from the anus.
- Diarrhea (die-uh-ree-uh). This is loose runny BM which may or may not have blood or mucus in it.
- Fever.
- An ill or a weak feeling.
- A knot or bulge in your abdominal area that you can feel.
- Loss of weight for which there is no reason.
- Nausea (upset stomach).
- No interest in eating.
Care: The care for Crohn's disease depends upon where the disease is in your GI system. How long you have had Crohn's disease may also help caregivers decide how to treat your disease. Your caregiver may suggest one or more of the following tests or treatments. You may need to go into the hospital for further care.
- Barium enema.
- Blood tests.
- BM tests.
- Colonoscopy and biopsy.
- CT scan.
- Medicines.
- Sigmoidoscopy.
- Surgery.
- Ultrasound.
- Upper GI barium x-rays.
Coping: Accepting that you have Crohn's disease is hard. You and those close to you may feel scared, depressed, angry, or sad. These are normal feelings. Talk to your caregivers, family, or friends about your feelings. You may also want to join a Crohn's disease support group. This is a group of people who have an illness like yours.
You may want to call or write the following organization for more information.
Crohn's and Colitis Foundation of America
11th floor
Park Avenue South
New York City, New York 10016
Phone: 1 (800) 343-3637
National Digestive Diseases Information Clearinghouse
2 Information Way
Bethesda, MD 20892-3570
Phone: 1 (301) 654-3810
crohn's disease 
Yes i have Crohns and suffer from nausea,diarrhea,bloating and acid reflux you have to watch your greasy food like Hamburger,caned beef,pizzia etc. If you talk to your doc. they can help with pills to control lot of the sysmtem you are having i hope this might help you. 
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