L'objectif de notre étude est d'explorer les mécanismes à l'œuvre dans les cas de passages à l'acte suicidaires en période de post-partum. Il s'agit ici de souligner l'importance de l'accompagnement pluridisciplinaire, tant psychologique, médical que social, dans la mise en place d'un maillage pluridisciplinaire autour des parents pendant et après la grossesse. Notre méthode consiste en une revue de la littérature sur les enjeux de l'accompagnement de femmes en ante- et post-partum, afin de prévenir ou d'accompagner la dépression du post-partum et les passages à l'acte pouvant en découler. Nous appuierons notre propos sur l'étude d'un cas clinique illustrant les points aveugles du système de soin. Les résultats de notre étude montrent que la dynamique suicidaire en post-partum est multifactorielle, prenant sa source en période anténatale et parfois bien en amont, mêlant des facteurs endogènes et exogènes pour des femmes confrontées aux attendus supposés de la société envers la jeune mère. Il est également à noter que l'accompagnement de la dépression du post-partum se fait de façon inégale sur les différents territoires, par manque de moyens effectifs ou structurels, laisse échapper certains sujets au maillage professionnel et mène parfois un passage à l'acte. Nous observons que l'accompagnement pluridisciplinaire des femmes suicidaires permet de limiter les risques d'aggravation de la symptomatologie et d'un passage à l'acte. Nous encourageons le travail conjoint entre les professionnels institutionnels et les professionnels libéraux du champ psychiatrique, médical et social, pour la constitution du maillage pluridisciplinaire indispensable à l'accompagnement de toute femme dans son devenir mère, il s'agit d'une question de santé publique. The aim of our study is to explore the mechanisms that come into play in cases of suicidal acts during the post-partum period. Our starting point is to emphasize the importance of multidisciplinary support – psychological, medical and social – in establishing a multifaceted network for parents during and after pregnancy. Additionally, the link between post-partum depression and suicidal behavior is discussed, as are the different types of risk factors. Our method consists of a review of the literature on the issues involved in supporting women in the ante- and post-partum periods, to prevent or support post-partum depression, and any resulting acts of aggression. These observations are then supported through the study of a clinical case illustrating the blind spots in the care system, which can leave certain subjects out in the cold. The clinical case illustrates the desire to have a child, the use of drugs during the perinatal period and the consequences of confinement in France during the post-partum period. The results of our study show that the post-partum suicidal trajectory is multifactorial, originating in the antepartum period, combining endogenous and exogenous factors, as well as society's supposed expectations of the mother-to-be. It should also be noted that support for mothers suffering from post-partum depression is often uneven in the different regions of the country, due to a lack of resources in terms of staff or structure, sometimes allowing the patient to slip through the net of care, leading her to act out. Information and training for professionals on the issue of the post-partum period and its possible repercussions on the mother's behavior are essential for better prevention and rapid treatment. Sometimes, depression is diagnosed during pregnancy, which facilitates treatment and speeds up contact with professionals to provide the best possible support for the mother during her perinatal period. We note, however, that multidisciplinary support for suicidal women helps limit the risk of the symptoms worsening and the risk of the patient acting on them. We emphasize and encourage concerted work and cooperation between institutional professionals and independent professionals in the psychiatric, medical, and social fields, to establish the multidisciplinary network needed to support all women, as they become mothers. Multidisciplinary support for mothers is essential during the perinatal period. Of course, we need to consider the importance of the health professional's work, but the family, spouse, and friends are also essential resources for the mother's well-being, and it is important to include them in this support network. [ABSTRACT FROM AUTHOR]