To Barbara Quackenbush: According to my info (which may be somewhat out of date) it looks as if your husband has Shy-Drager Syndrome, which is one of a family of PD variants called Multiple-System Atrophy (referring to parts of the brain). Unlike PD, SDS affects principally the autonomic functions, including regulation of blood pressure. Failure of that function is the cause of orthostatic hypotension or syncope. Unfortunately, dopaminergic medication for the primary symptoms of PD may worsen the symptoms of orthostatic hypotension. There is treatment in the form of both drugs and physical measures, such as elastic hose, for the hypotension, which you should expect from your neuro. Good luck! Cheers, Joe J. R. Bruman (818) 789-3694 3527 Cody Road Sherman Oaks CA 91403