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KMID : 1044320220240010001
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Annals of Clinical Neurophysiology
2022 Volume.24 No. 1 p.1 ~ p.6
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Quantitative sudomotor axon reflex test (QSART) as a diagnostic tool of small fiber neuropathy
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Suh Bum-Chun
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Abstract
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Small fiber neuropathy is a painful neuropathy that cannot be assessed using nerve conduction studies. A skin biopsy and quantitative sensory testing (QST) are the gold standards for small fiber neuropathy diagnosis. However, a skin biopsy is invasive and commercially unavailable in Korea. QST is a method involving a thermal threshold, but its results can be affected by cognition as well as lesions of the central nervous system. Quantitative sudomotor axon reflex test (QSART) is a quantitative method of assessing sweat glands innervated by small fibers. In this review, we assessed the utility of QSART in evaluating small fiber neuropathy.
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KEYWORD
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Small fiber neuropathy, Sweat, Autonomic fibers, Quantitative sudomotor axon reflex test, Quantitative sensory testing
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