<unk>  has many possible causes. Common infectious causes of<unk>  include Chlamydia trachomatis, LGV (Lymphogranuloma venereum), Neisseria gonorrhoeae, HSV, and Helicobacter species. It can also be idiopathic (see colitis), vascular (as in ischemic colitis), or autoimmune (as in inflammatory bowel disease).
Proctocolitis
Enterocolitis
Gastroenterocolitis
Ischemic colitis
Rectitis
Diversion colitis
Chemical colitis
Ileitis