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Split-axilla comparison study of 0.5-MHz, invasive, bipolar radiofrequency treatment using insulated microneedle
Background:
Energy-delivering devices can be used to induce thermal coagulation of the eccrine sweat glands for treating primary axillary hyperhidrosis (PAH).
Objective:
The objective of this study was to compare the efficacy and safety of invasive, bipolar radiofrequency (RF) treatment for PAH.
Methods:
A split-axilla study was performed to compare the clinical outcomes of 0.5 MHz, invasive, bipolar RF treatment with treatment settings of a longer conduction time and lower power (LC/LP) vs a shorter conduction time and higher power (SC/HP) for treating PAH.
Results:
The in vivo study revealed median hyperhidrosis disease severity scale scores of 1.5 (interquartile range [IQR], 1-2) at 1 month and 1 (IQR, 1-2) at 3 months after treatment with the LC/LP setting, compared to baseline. Meanwhile, the other side of the axillae treated with the SC/HP setting showed scores of 2 (IQR, 2-2) at 1 month and 2 (IQR, 1.25-2) at 3 months. Analysis via a linear mixed model revealed a significant interaction (group, P = .011; time, P < .001; and group × time, P = .048) between treatment group and time.
Conclusion:
PAH can be effectively and safely treated with invasive, multilayered, multiple-pass, 0.5-MHz, bipolar RF treatment, particularly with LC/LP.
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