Crohn's disease is a 55% chance the other will too. The incidence of Crohn's disease is increasing in Europe and in newly industrialised countries. For example, in Brazil, there has been an annual increase of 11% in the incidence of Crohn's disease since 1990. Inflammatory bowel diseases were described by Giovanni Battista Morgagni (1682–1771) and by Scottish physician T. Kennedy Dalziel in 1913. "Ileitis terminalis" was first described by Polish surgeon Antoni Leśniowski in 1904, although it was not conclusively distinguished from intestinal tuberculosis. In Poland, it is still called Leśniowski-Crohn's disease (). Burrill Bernard Crohn, an American gastroenterologist at New York
Dieterich's disease or therapy. The cause of Dieterich’s disease is still not fully understood. The disease can afflict patients of any age, but typically affects patients in their 30's. Though rare, it can also occur in children. Statistics show that generally more men are affected by Dieterich's than women in an estimated ratio of 3:2. The third (middle finger) metacarpal head has been reported to be the most common site of necrosis. Though osteonecrosis is a fairly common condition, many cases of avascular necrosis of the metacarpal hand go without being diagnosed. This is because presentation of symptoms is variable depending on