Substance dependence and mental illness frequently co-occur, presenting challenges to treatment providers and increasing the likelihood of suicide, drug overdose, and criminal justice involvement. Assessment and treatment of concurrent disorders (CD) have been identified by police, health professionals, and the Auditor General as urgent priorities in BC, and leadership in the treatment of CD is integral to the mandate of the Provincial Health Services Authority.
Despite well-documented personal and public risks associated with schizophrenia and opioid dependence, little research has examined the combination of these disorders. Medications, including methadone and antipsychotic drugs, are the first line treatments for patients with these diagnoses. Recent studies, including research conducted in BC, have revealed low levels of adherence to these prescribed medications, leading to increased risks of violence, property crime, and mortality.
Researchers investigating HIV/AIDS have shown that when opiate dependent patients are adherent to methadone they are also more likely to follow their HIV/AIDS treatment. This research will investigate whether methadone adherence similarly increases adherence to antipsychotic treatment and leads to superior outcomes for patients diagnosed with both disorders.