Samantha--now I'm confused--you say his tremor is a "resting" tremor because it_stops_when he's asleep...I always thought the term "resting" meant the tremor is present_only_when the person is still, and not there when the hand, etc. is in motion. Did I misunderstand you? Also, what we have read/heard is that PD is only diagnosed clinically (i.e. by tests of gait,cogwheel effect in elbows,mask-like face, etc), and that the tests such as MRI, PET etc. only rule out other possible causes in the brain. There is, of course, no blood test for PD yet. I'm puzzled what the neuro thought was "THE TEST" done in Atlanta.... yes, get another opinion for sure! Camilla Flintermann,CG for Peter,78/7 Ohio