According to the National Institute of Mental Health (NIMH), severe mental illnesses (SMI) are mental, behavioral, or emotional disorders (excluding developmental and substance uses disorders) of sufficient duration to meet diagnostic criteria specified within the Diagnostic and Statistical Manual of Mental Disorders (4th ed., text revision; DSM-IV-TR; American Psychiatric Association, 2000), resulting in serious functional impairment, which substantially interferes with one or more major life activities. The overall prevalence of SMI among U.S. adults in 2008 was 4.5% (U.S. Substance Abuse and Mental Health Services Administration, 2011). In addition to the personal impacts of these disorders, there are significant costs to society. To illustrate, during the year 2002, estimated costs of SMI totaled $317.6 billion, including direct costs of care, such as medication, clinic visits, or hospitalization (32%); indirect costs of disability benefits (8%); and loss of earning (60%). Those costs are in fact underestimated, as costs associated with comorbid physical conditions, incarceration, and homelessness were not taken into account (Insel, 2008). Furthermore, not only are such disorders acute but also the course of these illnesses is often persistent, leading to longstanding individual and societal impacts. When applying an expanded definition of SMI that includes a duration of psychiatric care of 2 years, psychotic disorders represent more than half of all patients (Parabiaghi, Bonetto, Ruggeri, Lasalvia, & Leese, 2006). The impact is striking, considering that lifetime prevalence of psychotic disorders exceeds 3% (Perala et al., 2007) and the 1-year prevalence rate of schizophrenia is about 1% in the United States (Narrow, Rae, Robins, & Regier, 2002). In restricting the definition of SMI to psychotic disorders, such as schizophrenia and bipolar disorders, it is important to note that treatment of these disorders is further complicated by other coexisting conditionsfor example, 21% of people with SMI also have a diagnosis of substance abuse or dependence (Buckley & Brown, 2006). Such prevalence, the devastating personal and familial impacts, and the economic burden of SMIs underline the necessity of providing effective mental health care for those patients. Are religion and spirituality (R/S) relevant to that end?
DIAgNOSIS AND TREATMENT OF SEVERE MENTAL DISORDERAccording to the DSM-IV-TR (American Psychiatric Association, 2000), psychosis is defined by reality distortion (delusions and hallucinations) and severe disorganization (disorganized speech). Characteristic symptoms of schizophrenia also include grossly abnormal psychomotor behavior and negatives symptoms (i.e., restricted affect, or avolition and asociality). To establish the diagnosis of schizophrenia two (or more) of those symptoms have to be present for a significant portion of time associated with the disturbance and have to persist for at least 6 months in one or more major areas of functioning, such as learning, work, interpersonal relations, selfc...