Efficacy of the Photobiomodulation on the Pelvi-perineal Pain in Immediate Post-partum Situation

Inclusion Criteria: * Woman aged 18 years or older * Primi or multiparous patient * Natural childbirth, regardless of the method of extraction (spontaneous, vacuum, forceps), and damage to the perineum (simple tear, episiotomy, obstetric anal sphincter injury) * Patients affiliated to a health insurance plan * Agreeing to participate in the study and having signed an informed consent Exclusion Criteria: * Immediate complications related to the childbirth and requiring management in the continuing care unit (delivery haemorrhage, eclampsia, etc.) * Severe neonatal complications requiring reanimation. * Patient with a cardiac pacemaker * Presence of a disease and/or taking photo-sensitising treatment * Patient under legal protection