Up Features Management Introduction Crohn' s disease is an inflammatory bowel disease. Its aetiology is not certain. Several possible causes have been mooted, including immunologic, dietary, bacterial and genetic factors, but none has yet been definitively established.
Tobacco smoking appears to lessen the risk of contracting the disease.
It usually appears among young adults but occurs in people of all ages. It occurs in both sexes, and is noted in all regions of the world. Its incidence appears to be increasing. It is classically characterized by granulomatous ulcerations of the various parts of the digestive tract, and fistulae ore often noted between adjacent loops of the digestive tract, other viscera, or even body surfaces. This disease has oral manifestations including gingival hyperplasia and lesions of the oral buccal mucosa.