Cited by 95Peripheral Neuropathies and DisordersHereditary Neurological DisordersPeripheral Nerve Disorders

The diagnostic yield of a standardized approach to idiopathic sensory-predominant neuropathy

Smith, A. Gordon, Singleton, J. Robinson·2004·Archives of Internal Medicine

Abstract

BACKGROUND: Peripheral neuropathy is a common problem that often prompts a lengthy and expensive diagnostic evaluation. A rational, evidence-based diagnostic approach to peripheral neuropathy is desirable. Prior studies have focused on all patients presenting to a tertiary referral center with a diagnosis of unclassified neuropathy. However, most patients with peripheral neuropathy have primarily sensory symptoms. This study focuses on patients with sensory-predominant neuropathy. The goal was to develop a focused diagnostic algorithm that can be easily applied in a general medical setting. METHODS: Patients referred with predominantly sensory symptoms and no previously defined cause were included and evaluated using a standard diagnostic approach. RESULTS: Among 138 patients, 25% had at least 1 first-degree relative with symptoms suggestive of neuropathy. Among laboratory studies, a 2-hour oral glucose tolerance test had the highest diagnostic yield (61%) and was more sensitive than other measures of glucose metabolism. Vitamin B(12) deficiency was identified in 2 patients. Results of serum protein electrophoresis, immunofixation, and antinuclear antibody testing were abnormal in less than 5% of patients, and these rates are similar to those found in the general population. Using this approach, only 31% of patients completing the recommended evaluation were found to have an idiopathic neuropathy. CONCLUSIONS: Patients with sensory-predominant neuropathy should be tested for glucose tolerance and vitamin B(12) concentration. The significance of abnormalities of serum protein electrophoresis and antinuclear antibodies is uncertain. Other tests should be performed only when the clinical scenario is suggestive. Patients with atypical features may benefit from referral to a peripheral neuropathy center.

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Crossref · 10.1001/archinte.164.9.1021

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  • Evidence is accumulating on increased prevalence of idiopathic polyneuropathy among prediabetic individuals, with IGT being more strongly related to painful than non-painful neuropathy.

    “Finally, evidence is accumulating on increased prevalence of idiopathic polyneuropathy (eg, idiopathic sensory/painful neuropathy,73–78 and sensory/small fibre only neuropathy)73,75,78 among prediabetic individuals with IGT being more strongly related to painful than non-painful neuropathy.73,75,78”

    From Prediabetes: a high-risk state for diabetes development (2012) · cites this paper as [74]

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Authors
Smith, A. G., & Singleton, J. R.
Affiliations
University of Utah (US)
Corresponding author
Smith, A. Gordon
Venue
Archives of Internal Medicine
Published
2004-05-10
Volume
164
Issue
9
Pages
1021
ISSN
0003-9926 (ISSN-L)
OpenAlex
W2123775795
Cited by
95
References
28
Citations by year
2026: 4 · 2024: 6 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 7 · 2019: 1 · 2018: 5 · 2017: 6 · 2016: 7 · 2015: 6 · 2014: 4 · 2013: 3 · 2012: 12
FWCI
2.46
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Internal Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Neurology › Peripheral Neuropathies and Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Peripheral Nerve Disorders
Keywords
diagnostic algorithm, oral glucose tolerance test, vitamin B12 deficiency, serum protein electrophoresis, antinuclear antibodies, diagnostic yield
MeSH terms
Adult, Aged, Aged, 80 and over, Algorithms, Antibodies, Antinuclear, Blood Protein Electrophoresis, Female, Glucose Tolerance Test, Humans, Male, Middle Aged, Neural Conduction, Peripheral Nervous System Diseases, Sural Nerve, Vitamin B 12, Vitamin B 12 Deficiency

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