The suicide is responsible is one of the leading causes of death in the world. The suicidology gives us two major trends in the interpretation of this phenomenon: the sociological, represented by Durkheim and his followers, that shifts the blame on society, and the psychological, represented by Freud and his disciples, that considers suicide as expression of a unconscious burden of hostility directed against the beloved object previously introyectado. Some features predominate in the personality of those who commit suicide: aggressiveness, irritability and social withdrawal. Risk factors for suicide are many and varied and can be interlinked.