Schizophrenia is a chronic mental illness, clinical syndrome characterized by specific psychological and bihevioural symptoms, significant individual variations of clinical picture, responses to therapy and the course of the disease, significant drop of functional capacity in every area – personal, family, work and social. Although the specific cause of schizophrenia remains unknown, research shows that genetics, psychological, social and cultural factors play a role in appearance and development of schizophrenia. Prevalence of schizophrenia is around 1% of the world population. Schizophrenia is diagnosed based on criteria in either International Statistical Classification of Diseases and Related Health Problems ICD-10 (ICD-10 or MKB-X) or the American Psychiatric Association's (APA) fourth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV). The mainstay of treatment is antipsychotic medication, along with social rehabilitation and psychotherapy. Usually family members and friends try to convince the patient that they need the treatment which is often seen as a problem since schizophrenic patients more often than not do not have insight of their condition and do not recognise the symptoms that help doctors to diagnose their condition. The improvement of state of schizophrenic person correlates with family members' involvement in the life of schizophrenic person since family members are able to notice causes of negative behaviour and are able to intervene before symptoms of schizophrenia manifest.