I too would encourage you to try Lyme treatments. I had horrid head pressure, Bell's Palsy (although mine was milder) and intention tremors (which were quite bad for a while), among many other symptoms. And you surely wouldn't be the first person misdiagnosed, or the first person misdiagnosed with Parkinson's that actually had Lyme disease!
There are actually over 300 other conditions that Lyme disease mimics:
www.lyme-symptoms.com/LymeMimics.html