This edition deals in more detail than in others with the following topics: the subject of forensic psychiatry, the organization, the procedure for the appointment and production of forensic psychiatric examination, the subject of forensic psychiatric examination in criminal and civil cases, penitentiary psychiatry . The legal basis for the activities of the forensic psychiatric expert . is described in detail Regulations as of October 1997. Forms of mental illness are set out in accordance with traditional views on them in domestic psychiatry and taking into account the international classification of diseases 10 revision (ICD-10), the introduction of which is planned in the near future. The volume of the textbook and the way of presenting the material allow it to be used not only in the preparation of students, graduate students, students of postgraduate education courses, but also in the practical work of investigators, prosecutors, judges, lawyers, forensic psychiatric experts .