Paul Gosar's health....

[LeftInTX]

20. He has compressed cervical vertebraes

From 2015

...Gosar, 56, said arthritis and two compressed vertebrae in his neck and lower back have caused nerve issues in his hand. The condition will require back surgery, which he hasn’t scheduled. In addition, he is dealing with complications from a hip replacement last summer.

“I’m as healthy as a horse,” he told The Republic earlier this month. “Not gonna get rid of me that easily.”

A dentist for more than 25 years, Gosar said the spinal compression arose from hunching over for long periods as he treated patients. Genetics and a history of rugby playing, which contributed to his need for a hip replacement, have exacerbated his condition, he said.

Gosar has tried to hide the spasms when he appears in public. He declined since March to discuss his health with The Arizona Republic until a reporter witnessed his hand movements at a Phoenix event this month...

https://www.azcentral.com/story/news/arizona/politics/2015/08/28/rep-paul-gosar-addresses-health-rumors/32366009/

Sounds like his problems are generated from his peripheral nervous system.