I am concerned about my father in this respect also. My grandfather & his brother had PD/ my brother has PD and my father had been diagnosed with ET several years ago. Lately he has developed a right thumb tremor, alot more neck & shoulder pain, loss of sensitivity in his finger tips...which has made him occasionally drop things. Also, urinary frequency and constipation (like me). What do you all think? Should I encourage him to see a physician about it...Four months ago I mentioned something to his VA doctor ..he said ... He doesn't have PD...so since then 4 more symptoms (above) have popped up.