Causes Hemorrhoids Bleed

A possible substance (nothing) that can cause hemorrhoids to "bleed"?
Any ideas anyone scandalous? Regardless if it seems ridiculous because my teacher asked us to propose something to test our creativity .. We believe that an ointment when applied to hemorrhoids in diasease batteries will hemorrhoid to bleed and thus reduce the swelling .. the best we can find is an antibody that act against hemorrhoids, but requires special feature .. HELP! : (
Well, you're only supposed to put the ointment on hemorrhoids external, but here goes: An ointment with a vasoconstrictor to force his blood vessels contract and have blood on hemorrhoids. Corticosteroid ointment to reduce inflammation and thereby reduce blood flow to the hemorrhoid. Arnica gel to "draw" hemorrhoids. Please understand that I do not actually use one of these, but to answer in mind you have requested. Both former are generally prescription medications you need to get your doctor and was never used on hemorrhoids to my knowledge.
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