Around a year ago I began experiencing lightheadedness and intense chest pain during swim practice. As time progressed, the dizziness and chest pain got worse and I began passing out frequently. Then the symptoms began to occur everywhere, not just at swim practice. I have also been experiencing memory problems and exhaustion. The exhaustion surprised me because I have always been a very active person who played many sports and worked out on a daily basis. The doctors did a lot of tests and all of the results came back normal, so they turned to a diagnosis of anxiety. I do not believe that this is anxiety, and have been searching for another diagnosis. Currently (1 year after the incidents @ swim practice) I am experiencing lightheadedness, memory loss, and exhaustion almost on a daily basis. Does anyone have any ideas on what could be causing this?