I think you will find there is a medicinal forum and I think it is for any medical question not just medicinal cannabis

http://boards.cannabis.com/forumdisplay.php?f=10

Hope the following info helps.

With the cold weather outside and the dry heat inside, more children will be having episodes of bloody nose.
Nosebleeds are loss of blood from the mucous membranes that line the nose. Spontaneous nosebleeds can result from vigorous nose blowing, or dry nasal membranes.
If someone has a nose bleed have them sit down and lean slightly forward. This will help keep blood from going down the back of his or her throat. DO NOT have them put their head back.
If you can see clots in the nose, have the person gently blow them out. Then have them pinch the soft part of their nose firmly for a full 15 minutes without releasing. It is also helpful to place a cold pack across the bridge of the nose.
After the nosebleed has stopped, an individual should not blow their nose for several hours. Whenever a person experiences regular nosebleeds or one that persists, a doctor should be seen.