FORENSIC PSYCHIATRY AND DUAL DIAGNOSIS
1.Objective: Dual diagnosis patients perpetrate crime more often than healthy individuals and is of great importance for forensic mental health services. However, in dual diagnosis patients, very little is known about factors explaining criminal behavior. This work aims to summarize the epidemiological and clinical approach of dual diagnosis patients, focusing on the Iberian Peninsula scope. Aditionaly, it aims to analyse the state of the art regarding associations between demographic and clinical factors and perpetration of crime in dual disorder patients. 2. Method: A non-systematic review of the literature is presented. Bibliographic selection was carried out through keyword research in MEDLINE and Google Scholar. 3. Results and conclusions: Perpetration of violence was independently associated with younger age, severity of alcohol use problems, lifetime trauma exposure, and higher manic symptom scores. The three drugs most commonly associated with the drugs–crime connection are heroin, crack and cocaine. A study conducted in penitentiary centers of the Interior in Spain found a high percentage of dual pathology (81.4%) In the portuguese largest security ward, in Coimbra, 40.5% of the sample had dual diagnosis disorders. Forensic units must take an integrated approach to addressing substance-use disorders. It is needed to consider not only the complexities of the substance misuse and the mental disorder, but also the offending behaviour that brought them into the forensic services. Also, social skills can effectively be improved in dual diagnosis patients. Further research is required to identify additional risk factors, such as individual substances of abuse, and establish a causal model leading to criminal perpetration.