On April 2, 1999 I had a concussion with loss of concensioness. Even after a year I had dizzy spells that last 6 to 8 weeks then go away for a few months only to reoccure. While riding my horse on May 21, 2000 I had another dizzy spell after months of not having them. Fell off the running horse and again another concusion with loss of concensionness. I was dizzy for about a week then had no problem for almost 7 months and my Dr. put me on hormone medication for a few days which started the dizzy spells again. The dizziness began the day I started the hormones which was December 12, 2000 and today is January 14, 2001 and I am still dizzy. Does anyone have any suggestions on keeping the dizziness away. I think it may be female hormones. I have had MRI and CT scanns several times only to find nothing. HELP!!!!!!!!!!!!!!!!!!!! I also have experienced depression and memory loss. Can't concentrate and make decisions like I use to.