Crohn's Disease & Ulcerative Colitis Support Group
Crohn's disease is a systemic inflammatory bowel disease (IBD) of unknown cause, that results in chronic inflammation of the intestinal tract. It can affect the entire gastrointestinal tract from mouth to anus, and can also cause complications outside of the gastrointestinal tract. There is no known medical or surgical cure for Crohn's disease, but there are many medical...
I don't know much about amica but just from the quick read I did on line, sounds like the word is still out on whether it really is that effective.
http://www.dailymail.co.uk/health/article-160090/Does-Arnica-really-work.html
http://www.healthline.com/natstandardcontent/arnica