Incest is a long-standing practice in our society, yet the same seven-letter word is still appalling to hear, because it has been shown that people who have lived incest experience terrible psychological and physical consequences and disastrous. In the twenty-first century, when an abused person wishes to denounce the situation, she is afraid of retaliation and she prefers to shut herself up in the silence and the denial of her many sufferings. Yet, it is important to talk about it and find ways to help these thousands of victims who are still living with the aftermath of abuse. This article focuses on incest in its large and restricts sense of the term; while elucidating the psychological consequences and the stakes incurred by those who experienced incest at a young age in the "Modern" families. In this way, we will attempt to illustrate the deep scars that the drama has left in these people in order to understand the complexity of the experience, the prohibition that surrounds it and the transgression of the forbidden, by asking ourselves about cultural diversity “Nande” in all its eras and according to its own history.