I have had numbness all over my body including lips and tongue for the last three years which have gotten progressively worse. No apparent weakening of muscle strength or sensitivity to temperature. There were times of apparent abatement when staying in dry climate in southwest but that period of abatement disappeared this year. Twice performed MRIs of head and neck, CT scan, EMG, Skin punch test, bone marrow biopsy and bloodwork. Ruled out : Small fiber neuropathy, MS, lupus, ALS, stroke, Thyroid problems, diabetes(glucose and A1C tested), B12 or 6 deficiency, sarcoidoisis, Hepatitis, HIV, Shiga, salmonella, shingella, cardiac issues. The only issue found mild macrocytosis. I am at my wits end to find a cause for my progressively worsening symptoms. Any suggestions where I can turn to next to try to find answers?