Effects of Noninvasive Skin Stimulation with Microcones on Constipation: A Double-Blinded Controlled Study

Objective: The use of noninvasive skin stimulation with microcones for constipation is promising. However, no double-blinded study has assessed the effects of this approach on constipation. The goal of this research was to assess the effects on constipation when using noninvasive skin stimulation with microcones. Materials and Methods: This double-blinded, controlled study included 44 subjects, each with a score of 5 points or higher on the Japanese version of the Constipation Assessment Scale (CAS-J). The subjects were randomly divided into 2 groups: (1) a stimulation group (skin-stimulation device with microcones; n = 23; group S) and (2) a placebo group (identical device without microcones; n = 21; group P). The subjects were required to attach the skin-stimulation devices to both cavum conchae with dedicated bandages every day for 2 months by themselves. Main Outcome Measures: This study assessed the severity of constipation, total mood disturbance (TMD) score, and salivary amylase activity (SAA) in each subject. Measurements were obtained before, during, and after the intervention. Results: With regard to the CAS-J score, significant differences were observed in both groups; however, no significant differences were observed between the groups. With regard to the TMD score, significant differences were observed in group S but not in group P. With regard to SAA, there were no significant differences in both groups; however, significant differences were noted after the intervention between the groups. Conclusions: Noninvasive skin stimulation with microcones could relieve constipation and improve TMD scores and SAA activity. This procedure may be used as a self-care option.