Crohn's disease affects the digestive tract anywhere from the mouth to the anus; however, it is most common in the small bowel. Most patients who are diagnosed with this condition are between 20 and 30 years old.
Causes
No single cause of Crohn's disease is known. Stress and dietary habits have been ruled out as causes, although they may aggravate the condition. It is believed that heredity and immune system abnormalities cause the disease, according to the Mayo Clinic.
Risk Factors
Crohn's disease affects mainly Caucasians, especially those of Jewish or European descent. A family history of irritable bowel syndrome and smoking are also risk factors for the condition, as is living in an urban area of an industrialized country and eating a diet low in vegetables and fruits but high in saturated fats and sugars.
Common Symptoms
Diarrhea that may contain bloody streaks and be accompanied by severe abdominal cramping is the most common symptom of the disease. Abdominal bloating, nausea and vomiting are also possible.
Less Common Symptoms
Some people with Crohn's disease experience fatigue, loss of appetite, floating stools, weight loss and fever.
Severe Symptoms
Children may experience delayed sexual development. Adults may experience skin conditions, eye and/or liver inflammation and arthritis.
