what causes high blood platlets

Hi Debbie.. First, I can't answer your question, but boy does my sister share your problem. I will pass on this post, and I m sure she will be writing to you. She has been on this quest for a few years now. Her platlets are close to a million. They go up and down and she is on a special medication. We are always searching the healthboards for some answers and hope! This is a wonderful place to talk with many others who are in the same boat. Maybe you and my sister will finally get some answers and get back to better health. Good luck. I will pass this info on....Janatee;)