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C-fiber axon reflex flare size correlates with epidermal nerve fiber density in human skin biopsies. 2009

Andreas Bickel, and Gisela Heyer, and Christine Senger, and Christian Maihöfner, and Christian Maihoefner, and Dieter Heuss, and Max J Hilz, and Barbara Namer
Department of Neurology, University of Erlangen-Nuremberg, Germany.

The size of the neurogenic axon reflex flare (ARFS) has been proposed to serve as a non-invasive measure of C-fiber neuropathies. This idea is based on the observation that ARFS is often reduced in patients with small-fiber neuropathies. In this study, we compared ARFS and electrically evoked axon reflex sweating with intraepidermal nerve fiber density (IENF) in patients with peripheral neuropathy in order to validate these methods against an objective standard method of diagnosing small-fiber neuropathy. ARFS was significantly correlated with IENF, while axon reflex sweating was not correlated to IENF. We conclude that measurement of ARFS is a potential objective non-invasive diagnostic tool for analysis of C-fiber function in patients with small-fiber neuropathies.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010523 Peripheral Nervous System Diseases Diseases of the peripheral nerves external to the brain and spinal cord, which includes diseases of the nerve roots, ganglia, plexi, autonomic nerves, sensory nerves, and motor nerves. Peripheral Nerve Diseases,Peripheral Neuropathies,PNS (Peripheral Nervous System) Diseases,PNS Diseases,Peripheral Nervous System Disease,Peripheral Nervous System Disorders,Nerve Disease, Peripheral,Nerve Diseases, Peripheral,Neuropathy, Peripheral,PNS Disease,Peripheral Nerve Disease,Peripheral Neuropathy
D012018 Reflex An involuntary movement or exercise of function in a part, excited in response to a stimulus applied to the periphery and transmitted to the brain or spinal cord.
D004558 Electric Stimulation Use of electric potential or currents to elicit biological responses. Stimulation, Electric,Electrical Stimulation,Electric Stimulations,Electrical Stimulations,Stimulation, Electrical,Stimulations, Electric,Stimulations, Electrical
D004817 Epidermis The external, nonvascular layer of the skin. It is made up, from within outward, of five layers of EPITHELIUM: (1) basal layer (stratum basale epidermidis); (2) spinous layer (stratum spinosum epidermidis); (3) granular layer (stratum granulosum epidermidis); (4) clear layer (stratum lucidum epidermidis); and (5) horny layer (stratum corneum epidermidis).
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000369 Aged, 80 and over Persons 80 years of age and older. Oldest Old

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