Small Fiber Neuropathy Overview
Overview by M.C. & modification by Dr. I. Khan
Understanding Neuropathy Causes
Ensure you undergo testing to rule out Celiac disease when evaluating causes.
The nervous system consists of two primary divisions. The central nervous system encompasses the brain and spinal cord. Peripheral nerves branch off from the spinal cord to connect the rest of the body.
Peripheral pathways include somatic nerves that consciously control muscle movement, alongside autonomic nerves that involuntarily regulate heart rate, blood pressure, sweating, thermal control, and digestion.
Damage to peripheral pathways is classified as peripheral neuropathy. Autonomic neuropathy represents a specific subclass where the smallest nerve fibers sustain damage.
Multiple systemic factors trigger autonomic nerve damage. Diabetes remains the primary cause, with approximately half of diabetic individuals eventually developing peripheral or autonomic nerve complications.
Other Contributing Factors
- Alcoholism: Chronic disease contributing directly to nerve damage.
- Nutritional Deficiencies: Diets high in refined sugars and white flour lacking essential fatty acids.
- Infections: Viral syndromes and Mycoplasma bacterial infections.
- Protein Accumulation: Amyloidosis and Celiac disease causing tissue protein buildup.
- Autoimmune Diseases: Direct immune system attack targeting nerve tissue.
- Paraneoplastic Syndromes: Tumors exerting direct compression or remote antibody damage on nerve fibers.
- Multiple System Atrophy: Progressive neurodegenerative condition affecting autonomic control.
- Trauma: Surgical injury or physical trauma from accidents.
- Chronic Illnesses: Secondary impacts from Parkinson's disease or HIV/AIDS.
Risk Factors
A diagnosis of diabetes presents a strong risk factor for developing autonomic neuropathy. Long-term progression increases susceptibility—particularly for individuals managing diabetes for over 25 years, individuals over age 40, or those facing persistent blood glucose fluctuations.
Maintaining blood sugar within target ranges lowers the likelihood of developing nerve damage and helps prevent existing neuropathy from advancing.
When to Seek Medical Advice
If you manage diabetes, an immunocompromised condition, or another chronic diagnosis, seek prompt medical care upon noticing initial signs of autonomic neuropathy. If standard options feel limited, our network provides guidance on navigating treatment paths and insurance coverage for therapies like IVIg.