Vitamin B12 deficiency can cause peripheral neuropathy also, so that would be another good reason to be checked for that. And while they're checking, ask for a Folic Acid test as well to make sure you aren't deficient in that one. These two - B12 & Folic Acid - are very important for proper nerve function.
Gluten & Sulfite Sensitivity, Multiple Food & Inhalant Allergies, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD (Lupus?), Osteoporosis, Anemia, malabsorption/malnutrition, etc.
Meds: Pulmicort, Claritin, Injectable Vitamin B12, Herbs, Nutritional Supplements, Essential Oils, Homeopathy.