Twenty patients with PAH had 1 session of Fractionated microneedle radiofrequency treatment. Clinical improvement was evaluated using a Hyperhidrosis Disease Severity Scale (HDSS) and photographs were taken using the starch-iodine test at every visit and 4 weeks, 8 weeks, and 24 weeks after the treatment. Skin biopsies were obtained from 3 of the enrolled patients before and after treatment. The satisfaction and adverse reactions of the research participants were recorded at every follow-up visit.