Introduction: Forearm QSWEAT recordings are occasionally absent in females, likely due to high skin resistance.

Methods: We identified consecutive subjects with no sudomotor abnormalities but absent/markedly reduced QSWEAT forearm volume, and repeated QSWEAT at the same site after gentle abrasion.

Results: QSWEAT volumes were absent for 4 subjects and markedly reduced for the other 4 (median 0.01, IQR 0-0.03). After gentle skin abrasion, repeat volumes were significantly higher for all subjects and became normal in 7 of 8 subjects.

Discussion: Skin abrasion restores QSWEAT volumes in previously absent/markedly reduced site suggesting that skin preparation using abrasion is more effective.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6880398PMC
http://dx.doi.org/10.1016/j.autneu.2019.102589DOI Listing

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