Case worker who checks with your physicians to see if you are impaired enough to warrant the claim. Usually, they seek several opinions, and that of a neurologist or two can help get you on SSDI within six months.
I can't stress the following any more exclamatory; get any life insurance and long true care insurance that you can get WELL BEFORE ANYONE BUT YOU SUSPECTS THAT ANYTHING IS WRONG WITH YOU. TO THOSE WHO COME TO THIS SITE, LOOKING FOR AN EXPLANATION OF POSSIBLE PD SYMPTOMS, IF YOU THINK THAT YOU MAY BE SHOWING SIGNS OF PD, GO WITH YOUR GUT FEELING, AND PROTECT THE FINANCIAL FUTURE OF YOURSELF AND YOUR FAMILY. YOU ARE GOING TO NEED IT, BUT ONCE IT IS ON PAPER THAT A DX OF PD IS SUSPECTED, YOU ARE GOING TO SEE HOW FAST PWP BECOME INSURANCE PARIAHS.