As a pre-teen and a teenager...then some years beyond I would have fainting spells that were not correlated to any activity or pre-cursor. Sometimes i would be sleeping and it would actually wake me up, and i woud pass out...blood pressure drop, ears ringing, tingling all over, sometimesi stopped breathing when I fainted and have woken up while getting rescue breathing. It gradually stopped over the years. I wore a Holter monitor for month and went to a cardiologist and was diagnosed with mild mitro valve prolapse...i tried beta blockers, but the made my heart flutter a lot, so i stopped and gradually the fainting did too. I am currently dealing with a chronic pain condition (endometriosis) and have been struggling with it for a year now after treating it very aggressively. Since starting Lupron shots, a very aggressive drug therapy, I started getting the feeling i was going to faint like i used to all the time, but never actually fainted. I have stopped the Lupron and things are getting back to normal, but i still feel like i am going to pass out...several times a day. I have stopped riding the subway - no way for easy escape to fresh air, and avoid places i can't sit down or get out of quickly...like long lines or concert w/ floor seats. I have not actually passed out with these new feelings, and I am now having the feeling like i cant breathe so I am thinking these are now panic attacks?? Unrelated to my past issues? I am not an axious or worrisome person, but i will cop to being stressed about my health and difficulty getting treated. Its stressful now too that I am adding this condition to the mix??? More doctors!! Sorry, but i am sick of them!! I am starting the pain management program with includes weekly session with a pain therapist, and i want to address this with her, but it doesnt start for a couple months. I plan on doing this program in the meantime and sharing my results and notes and forms with her. Could this be hormonal? between the endo and the Lupron I feel like there has to be a connection?