@jeanallen, Normally a neurologist is the type of doctor that diagnoses neuropathy. If you have not been diagnosed with small fiber neuropathy and the pain management is not helping, it might be helpful to seek a second opinion for a diagnosis and treatment that helps with your pain. Here are a couple of sites that provide good information about neuropathy:

-- Neuropathy Commons: https://neuropathycommons.org/neuropathy/neuropathy-overview
-- Foundation for Peripheral Neuropathy - Treatments: https://www.foundationforpn.org/treatments/

Have you thought about seeking help or a second opinion at a major teaching hospital or health facility?