It has to be one of the three, given your text book neurological symptoms.
Severe Heavy Metal Toxicity
or a combination of all three.
I cannot speak authoritively about Lyme's, but I will side with Eric about the heavy metal issue.
I reccomend pernicuous anemia forum for a starter about the b12 issue. What you will be needing, is the methyl b12 as a methyl donor for the heavy metal removal. In this regard that is killing two birds with one stone.
But it requires use of 500 mcg of methylb12 a day subcutaneoulsy injected for several months. This dose regime is extremely important.
So is cutler's ALA and DMSA dose.
Do you have silver Amalgam fillings, root canals, crowns, cavities? Did you have them in the past and the baby tooth or adult tooth was removed?
The only way to really strongly disprove Lyme's in my experience is to provocate strong detox reactions with metal chelators.
You need a very aggresive metal removal regime with the advice of the frequent posters on this adrenal fatigue forum. If these supplements provoke strong reactions, that are lasting, then you most certainly have heavy metal toxicity.
Here is a list of the dominant substances for rebuilding the nervous system and removing heavy metal.
Modified Citrus Pectin
Chlorella Growth Factor
Humifulvate tablet and liquid
DMSA @ 3 hour dosing interval x 8 daily|5 days on|5 days off minimum
ALA and R-LA @ 3 hour dosing interval x 8 daily|5 days on|5 days off minimum
Tri-Boron w/ Cysteine or MSM
Selenium+Methionine and Cysteine
Subcutaneous Injectable Methyl-B12
IntraMax Liquid Multi-mineral
Purified covalently bound Silica
Transdermal, Lyposomal, and Injectable Glutathione
GrapeSeed, Cacao, Pycnogenol, Cinnamon Essential Oil OPC's
Lion's Mane Mushroom
Gotu Kola Extract