Whenallelsefails,
I've had many of the symptoms you've mentioned--migraines, dizziness, pain/stiffness in hands/feet, numbness, loss of control of my right hand entirely for a few weeks, several cysts, and weakness.
I hope you find answers! If not Lyme, there are other neurotoxin mediated illnesses that cause similar symptoms, and depending on where you live and where you have traveled, you might consider them, as well. Mostly the east coast and Florida are the places resposible for things like pfiesteria and ciguetera.