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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 29. Chapters: Crohn's disease, Adrenoleukodystrophy, Episodic ataxia, Congenital disorder of glycosylation, Fructose malabsorption, Cystinuria, Pendred syndrome, Progressive familial intrahepatic cholestasis, Stargardt disease, Hartnup disease, Lysinuric protein intolerance, Adrenomyeloneuropathy, Salla disease, Glucose-galactose malabsorption, Allan-Herndon-Dudley syndrome, Tangier disease, Gitelman syndrome, Dubin-Johnson syndrome, De Vivo disease, African iron overload, Arterial tortuosity syndrome, Renal glycosuria, Thyroid dyshormonogenesis. Excerpt: Crohn's disease, also known as regional enteritis, is an inflammatory disease of the intestines that may affect any part of the gastrointestinal tract from mouth to anus, causing a wide variety of symptoms. It primarily causes abdominal pain, diarrhea (which may be bloody if inflammation is at its worst), vomiting, or weight loss, but may also cause complications outside the gastrointestinal tract such as skin rashes, arthritis, inflammation of the eye, tiredness, and lack of concentration. Crohn's disease is thought to be an autoimmune disease, in which the body's immune system attacks the gastrointestinal tract, causing inflammation; it is classified as a type of inflammatory bowel disease. There is evidence of a genetic link to Crohn's disease, putting individuals with siblings afflicted with the disease at higher risk. Males and females are equally affected. Smokers are two times more likely to develop Crohn's disease than nonsmokers. Crohn's disease affects between 400,000 and 600,000 people in North America. Prevalence estimates for Northern Europe have ranged from 27-48 per 100,000. Crohn's disease tends to present initially in the teens and twenties, with another peak incidence in the fifties to seventies, although the disease can occur at any age. There is no known phar...