I have had chronic nosebleeds all of my life. My doctor said it was from thin blood vessessl in the nose, anyway I am used to it. I can just be sitting there talking to someone and I feel a warm trickle, and then like a water faucet opening up. But blowing my nose hard or getting hit in the nose does it. My brother has gotten some spells recently, but that is because he is a chemist and he is exposed to some nasty sh!t. BUt for me it is just a part of everyday life, humidity changes really effect it, and I have had less of them lately, used to have a nosebleed at least twice a week now maybe every other week.