Psychiatry is a medical discipline addressing the study, diagnosis, treatment and prevention of mental disorders. Psychiatric disorders, which may be seen in people of all ages, involve the emotions, the will, and intellectual processes, verbal and non-verbal behaviour. According to current knowledge we cannot speak about only one cause but of the interaction of several etiological factors, mutually pervading and causing the mental illness. Because of this the treatment of mental disorders involves the complex implementation of biological, psycho-therapeutic, and socio-therapeutic methods of treatment. The contemporary principle of integrative psychiatry immanently requires simultaneous treatment of three human components: body, mind, and spirit. The holistic approach emphasizes the importance of the wholeness of the human person, and the inter-dependence of his components.