I have been randomly been passing out and I was wondering why this is happening. Usually my vision gets really blurry, my ears start ringing, I get very sweaty and then eventually everything goes black for a couple of seconds. It has happened at school, during a basketball game, just this morning while I was getting ready for school and various other times. I am a sixteen year old female, I have a proper diet and I am an athlete so I am a very active person. I also drink plenty of water so that shouldn t be a problem. Any ideas?