Clinical and Social Factors Associated With Violent Behavior in Persons With Schizophrenia Spectrum Disorders

Abstract

Study of the relationship between mental disorder and violent behavior is critical both from a public health perspective and for the proper planning and development of mental health services.However, the complex contribution of clinical, historical and environmental risk factors for violence in persons with schizophrenia remains unclear. The aim of the study was to identify clinical and social risk factors for violence in patients with schizophrenia and schizophrenia spectrum disorders (SSD) using a case-control design. Cases were defined as patients with SSD who had committed at least one act of offence in the past (94 patients wereenrolled from forensic psychiatricward). Controls were genderand age matched patients with SSD who had never committed violent acts (106 patients from general psychiatric services).A standard set of instruments was used to assess patients exposure to a variety of risk factors. Data were collected through patient interviews and medical records.Study results showed, that increased risk of violence was associated with severity of positive psychotic symptoms, diagnosis of delusional disorder, irregular or no contacts with mental health services. Significant risk factors for serious violent acts were associated with comorbid alcohol misuse, impulsivity,persecutory delusions,decreased emotional responseand unsatisfactory living environment. Study confirmed that the interaction of social andclinicalfactorswith treatment related factors played an important role as determinants of violence. These factors should be the focus of treatment and management of patients with SSD to prevent violent behavior.