The epidemiology of<unk>  disease is extremely rare and has only been diagnosed in about an estimated 300 patients worldwide to date (as of 2014), it is probably under diagnosed. It can occur in children.
Idiopathic sclerosing mesenteritis
Collagenous colitis
Microscopic colitis
Lymphocytic colitis
Diversion colitis
Cytomegalovirus colitis
Ulcerative colitis
Environmental enteropathy