Cyclic Vomiting Syndrome Association
CVS is an unexplained disorder of children and adults that was first described by Dr. S. Gee in 1882. The condition is characterized by recurrent, prolonged attacks of severe nausea, vomiting, prostration with no apparent cause. In some there is severe abdominal pain. Vomiting occurs at frequent intervals for hours or days (1-4 most commonly). The episodes tend to be similar to each other in symptoms and duration and are self-limited with return of normal health between episodes.
American Gastroenterological Association
The American Gastroenterological Association is the trusted voice of the GI community. Founded in 1897, AGA has grown to include more than 16,000 members from around the globe who are involved in all aspects of the science, practice and advancement of gastroenterology.
National Institute of Diabetes & Digestive & Kidney Diseases (National Digestive Disease Information Clearinghouse)
The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) conducts, supports, and coordinates research on many of the most serious diseases affecting public health. The Institute supports clinical research on the diseases of internal medicine and related subspecialty fields, as well as many basic science disciplines.