[Clinical research on violence].

Violence and agitation are two different behaviors however not always differentiated. There are not only physical violence but also moral violence such as erotomania eventually more dangerous. There is no clear definition of violence. Research should be improved. Today there is an increase of different types of violence, such as self-inflicted violence as in suicidal behavior, rather frequently associated with alcoholism. Clinical experience is given from l'Infirmerie Psychiatrique, a forensic psychiatric emergency department.