Rectal foam or suppositories to treat ulcerative colitis (proctitis) or for Crohn's disease affecting the rectum. Evidence-based professional reference pages authored by our clinical team for the use of medical professionals. A nasal spray containing a type of medicine called an antihistamine (such as azelastine or olopatadine) may be better. http://delphi.larsbo.org/user/findteam4