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Neuropathy and Unmyelinated Epidermal Nerve Fibers Masahiko Tomiyama 1 , Soroku Yagihashi 2 1Department of Neurology, Aomori Prefectural Central Hospital 2Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine Keyword: skin biopsy , intraepidermal nerve fiber density , small fiber neuropathy , diabetic neuropathy , unmyelinated fiber pp.1225-1231
Published Date 2012/11/1
DOI https://doi.org/10.11477/mf.1416101335
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Abstract

 Detection of unmyelinated epidermal nerve fibers allows objective, pathologic, and minimally invasive assessment of small myelinated A-delta and unmyelinated C primary afferent fibers. This procedure is especially valuable for diagnosing small fiber neuropathy; this condition is characterized by sensory symptoms and pain in the lower extremities but standard nerve conduction fails to show abnormalities in this condition. Detection of epidermal nerve fibers is useful not only for confirming the diagnosis of neuropathies affecting small-diameter sensory fibers, but also in advanced clinical care since this procedure can provide insights into the role of small myelinated and unmyelinated axons in peripheral nerve disorders and neuropathic pain. In this review, we discuss standard technical aspects of skin biopsy introduced for evaluation of epidermal nerve fibers and the feasibility of skin biopsy for diagnosing small fiber neuropathy and neuronopathy. We also describe the usefulness of skin biopsy in diagnosing peripheral neuropathies and other neurological disorders.


Copyright © 2012, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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