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info_outlineDr. Aaron Zelikovich discusses recent survey findings highlighting the wide variability in how clinicians evaluate and diagnose small fiber neuropathy.
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Show citation:
Thawani S, Chan M, Ostendorf T, et al. How Well do We Evaluate Small Fiber Neuropathy?: A Survey of American Academy of Neurology Members. J Clin Neuromuscul Dis. 2025;26(4):184-195. Published 2025 Jun 2. doi:10.1097/CND.0000000000000502
Show transcript:
Dr. Aaron Zelikovich:
Welcome to today's Neurology Minute. My name is Aaron Zelikovich, a neuromuscular specialist at Lenox Hill Hospital in New York City. Today, we will discuss a recent article, How Well Do We Evaluate Small Fiber Neuropathy? A survey of The American Academy of Neurology members, which evaluates small fiber neuropathy in clinical practice.
The current landscape of evaluating and testing for small fiber neuropathy remains highly variable in regards to serum testing, skin biopsy, and nerve conduction studies. In this survey study, 800 members of The American Academy of Neurology were randomly selected and emailed a survey. 400 neuromuscular physicians and 400 non-neuromuscular physicians were selected. The overall response rate was 30% with half of the completed surveys coming from neuromuscular physicians. The most common overall initial blood work for this patient population was a CBC, vitamin B12, basic metabolic profile, TSH, and hemoglobin A1C. Other high yield blood tests included ESR, SPEP, immunofixation, and ANA. 70% of responders would also order a nerve conduction study as part of the initial workup. Second line evaluation had less consensus and included skin biopsies for intraepidermal nerve fiber density, hepatitis panel, HIV, and paraneoplastic testing. Responders noted that if the patient had acute onset of symptoms, had symptoms that were asymmetric, or being under 30 years old, they would order a more extensive workup.
The authors discussed the importance of both clinical exam, history, and diagnostic workup in patients with symptoms compatible with small fiber neuropathy. They highlight that there is no current objective gold standard for a diagnosis of small fiber neuropathy. The current diagnostic recommendation by the AAN for distal symmetric polyneuropathy includes serum blood sampling for glucose, vitamin B12, SPEP, and immunofixation. Clinical practice in the diagnosis of small fiber neuropathy remains highly variable based on the provider and clinical context of the patient.
Neurology Practice Current is currently accepting surveys on clinical practice patterns for patients with small fiber neuropathy. Please check out the link in today's Neurology Minute to complete the survey. Thank you and have a wonderful day.