Comorbidity of mental disorders with alcohol and drug abuse (Revue of the problem dual diagnose)

The rate of substance-use disorders in patients with severe mental illnesses, such as schizophrenia and bipolar disorder, is higher than the rate observed in the general population and is associated with significant morbidity and mortality. The co-occurrence of severe mental illness and substance use disorder, or dual diagnosis, is prevalent and is associated with significant clinical and social problems. There are revue of the current researches the problem of dual diagnosis. We discuss the rate of substance-use disorders in patients with schizophrenia and bipolar disorder, most clinical and social problems of these patients, and theories have been advanced to explain the elevated prevalence of substance use disorder in people with psychic disorders.