I seem to have invented the wheel again! Having concluded that my Dystonia was originating in the brain, and so may respond to changes in Dopamine level, I thought I would consult Black's Medical Dictionary: Quote: Dystonia refers to a type of involuntary movement characterised by a sustained muscle contraction, frequently causing twisting and repetetive movements or abnormal postures and CAUSED BY INAPPROPRIATE INSTRUCTIONS FROM THE BRAIN. Unquote Regards, -- Brian Collins <[log in to unmask]>