Posted: 03/25/2010 - Most nosebleeds are distracting but go away after a few drops. Imagine having a nosebleed every day of your life … but instead of a few drops, it's a few pints of blood. That's reality for people with H-H-T, a genetic disorder that affects blood vessels. It impacts one out of every two-thousand people in the U.S. and more than six-million people world-wide. One doctor is experimenting with a spray to stop the bleeding.