He started taking Seroquel about 8 months ago. Now he has tremors, his psychiatrist put him on Artane to ease those tremors, but it isn't working. He stands up and if he isn't careful, he blacks out. Sometimes it isn't ataxia, his muscles just refuse to hold him up and he goes down...all this since starting on the Seroquel...he DOES need this medicine otherwise he has no impulse control and goes into violent rages....we are BOTH scared.