Brief Summary:

The goal of this project is to evaluate the clinical response of patients with symptoms of genitourinary menopause syndrome after the application of photobiomodulation in the vagina and its introit. METHOD: In this randomized, double-blind, placebo-controlled study protocol, women over 50 years of age who are in the postmenopausal period (amenorrhea for at least 12 months, with no pathology involved) with one or more symptoms of PGS will be selected. Participants included in the study will be randomly divided into two groups: group A, which will receive photobiomodulation with a vaginal diode laser and its introit and group B (placebo) with the laser device turned off. Both treatments will be maintained for 4 consecutive weeks.The treatment group (n=30) will receive four consecutive applications, using laser diode DMC (808 nm), 4J per point, 100mW of power, 510mW/cm², beam area of 0.2cm², 8 sites in the external vagina, for the 40s in each site, once per week for 4 weeks. The Placebo Group (n=30) will be handled as treated, but with the laser turned off. Quality of life will be analyzed using the female sexual functioning index (FSFI-6), the urinary incontinence questionnaire (ICIQ-SF), the intensity of menopausal symptoms will be evaluated using a visual analogue scale (VAS), the vulvo vaginal atrophy will be measured by the Vaginal Health Index (VHI) and compared between groups. Also, the vaginal temperature will be measured using a thermal camera, as well as the pressure of the pelvic floor force (vaginal dynamometer) and a 1-hour Pad Test will be performed to quantify the urinary loss. The data will be tested for normality using the Shapiro Wilks test and, if they present a parametric distribution, they will be represented by means of their respective means and standard deviations.