Do a search of "startle reflex" on the internet. Lots of info out there. I seem to recall that an increased startle reflex is one of the primary symptoms of an ailment but don't have time to search it out. > ---------- > From: davidmeigs[SMTP:[log in to unmask]] > Hi Bill, > > The dyskensia is another thing though. This is one of a few things that > makes me wonder IF PD is the shoe that fits. I get involuntary movements > at > times, and I take no drugs. These are much worse with stress. I am not > really sure if this is "true dyskensya" that I do either. A loud noise, > or > sudden movement makes me "jump". If I am walking in a parking lot, and a > car starts, or starts to move, I "jump" like being startled. Even if I > see > it coming. Someone sitting behind me making noise has the same effect. > >