I too have read this. Parkinson's Disease is the result of too little dopamine in the brain and Schizophrenia is the result of too much. I believe this came from http://ourworld.compuserve.com/homepages/PD_Digest/ . There was a letter from a medical student who wanted to bring this to the attention to PD patients. My father has had Parkinson's for 8 years. His sinement had to be increased recently and although he is feeling much better he has gotten very confused. At times he doesn't recognize my mother. Just 1 1/2 years ago he was a full time farmer and very healthy. Any suggestions for the confusion would be appreciated. Thank you. Jean Sutton