I've had three nosebleeds in the twenty years of my life. All three times were after recovering from a sinus infection. The last one I had, I almost fainted, because I stood up too quickly. I sat in the fetal position for a while, and I was fine.
honest answer back in high school i got so many nosebleeds i was practically known for it especially at the nurses office, they knew me 由 name, it was so bad id have blood all over my hand and on my 衬衫 或者 pants 95% of the time and would have to wash it off in the bathroom