Hello. I have had essential tremor for years, it has been increasing in severity over the last couple years & I just became aware of a motion I've been doing when nervous or in deep thought for maybe the past year or so.. It's the textbook pill-rolling motion, my question is if this motion is fairly exclusive to Parkinsons or not? I am a medical professional myself & will, naturally, be evaluated soon by my PCP but would like to do more homework beforehand on the tremor & can't find much evidence of the tremor existing independent of Parkinsons. Thank you!