I am 16 years old and I've had nose bleeds since I was 2. I've been cauterized enough. Most recent time in November. To me, one persons bad is my good for blood loss. The most recent nose bleed lasted about an hour and a half. I have an appointment AGAIN with the specialist. Yes my blood work is fine. Haemoglobin is good, blood count is good, white blood cells good and blood pressure is normal. No cancer. I am not anaemic. There is no problem showing, but there is obviously one. I can tell you when one is going to start. I get immense pressure in my head, eyes and gums, then out of no where bleed. After bleeding, due to so much blood loss, I get a headache and really dizzy. They have no explanation. can you think of anything?