Soulless psychopaths have personalities characterized by blunted affect, especially (but not exclusively so) compared to other men. Individuals are devoid of compassion, shame, honor, repentance, moral conscience; in his nature, often sullen, cold, grumpy; in their actions, asocial, brutal.

They also form the core of the “enemies of society and” antisocial “of Kraepelin.

This “moral anesthesia” emphasizes the abnormality of feelings: “The moral anesthetic” fully aware of the moral laws; are seen, but not felt and, therefore, not subordinate to them their behavior. His expression, despite its good plasticity, does not look happy as physiological expression. They emphasize much the lack of compassion who, from birth, remains unable to feel compassion, is a pathological man “Transitions are insensitive, since the few compassionate to the indifferent, and from there to the cold or soulless.

In this review we aim to present a patient with this diagnosis, in order to update the above clinical terms. Many of them have no precise counterpart in the current diagnostic and therapeutic guidelines, and these are insufficient to characterize semiologically, and thus give a prognosis and therapeutic response.

We try to explain the moral fault if the intellectual defect is also presented. In the absence of moral concepts exist a defect, although this often was undercover. There inability to form higher concepts; moral oligofrénico can not understand the essence of moral duties.