I'm not a doctor but I would guess from my own experience what you are experiencing is toxin overload. I suggest buying Dr. Jernigan's CNS/PNS Neuro-Antitox Formula which binds up toxins including ammonia which can cause the symptoms you are talking about. One lady I know who went to Dr. J's clinic in Kansas (who never took any antibiotics) had so much ammonia that Dr. J. concentrated on getting the ammonia out of her brain and body before he started to treat her for lyme. Today she has her life back after suffering for 30 years (again, she never took one antibiotic).
I can't stress enough how important detoxing is. In the sticky thread on top called "New to Lyme? Start Here!" there are detoxing instructions.
Get rid of the toxins and you will notice a HUGE difference!!
Hope this helps,