Sexuality is a natural function, part of global health and has to be evaluated in every patient. When difficulties or dyfunctions happen in this domain, a specific mangement should be proposed. Sexual medicine is a « young » transversal discipline developping these last years in the french-speaking area of Switzerland. We present in this article a short history of sexual medicine in Lausanne and the recent activity in the Sexual Medicine Consultation of the Maternity in the CHUV.