My mother Joyce (69) saw her doctor today and asked how he knew she had striatonigral degeneration and not PD. He pointed out that she doesn't react to the drugs the way PWPs do -- the drugs make her better, but it's not a distinct benefit (she is still rigid and slow and experiencing tremor, just not as badly as when she's not on). Also, he said that he's been doing this for 15 years and he could tell by looking at her that she doesn't have PD -- he's sure of it. Any thoughts on this? Thanks and I'm wishing for a happy and healthy new year for all of us. Debbie White [log in to unmask]