There is a very low yield on LPs for small fiber neuropathy, unless the EMG was suspicious for CIDP. If the EMG showed axonal neuropathy without demyelination, chances are it will be negative.

There are a lot of tests one does before an LP. Have you gone throught the tests listed on www.lizajane.org?

Plus, as I've found out, getting a proper lyme test is mandatory. PROPER is the word--at one of the three lyme labs I've posted in the stickies and maybe my recent notes.

On the lyme forums, about half the patients have arthritis, and the other half have what we'd call idiopathic small fiber neuropathy.

Please check out the charts and the lyme sticky.