Schizophrenia is a heterogeneous disorder and can be characterized by any of the following symptoms: intellectual deterioration, emotional blunting, disorganized speech, disorganized behavior, social isolation, delusions, and/or hallucinations (American Psychiatric Association [APA], 2000). In the current version of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) schizophrenia has now been divided into five subcategories (APA, 2000). These subtypes are defined based on the presence of positive symptoms (excesses, such as hallucinations and delusions) or negative symptoms (deficits, such as social isolation and poverty of speech) of behavior in the presentation of the disorder.
There is no defined cause for schizophrenia although many have been proposed. First, it is generally acknowledged that schizophrenia is at least in part caused by an imbalance of neurotransmitters. The classical "dopamine hypothesis" of schizophrenia has asserted that there is a hyperactivity in dopaminergic transmission at the dopamine D2 receptor in the projections to the limbic system in the brain (Matthysse, 1974). Despite several limitations this hypothesis still remains the most popular of the neurochemical theories. The other line of evidence is heredity, suggesting genes play a role in schizophrenia. However, it is still unclear if schizophrenia is the result of a single mutated gene, a series of mutated genes, or a mutated gene passed from parents. The concordance rate between monozygotic twins for schizophrenia is around .5 in most studies (Cohen, 2003; Sadock & Sadock, 2007).
Psychotherapy for schizophrenia has rarely been considered a first line treatment and the first line treatments for schizophrenia today consist of medications. Older drugs such as and Haldol primarily work as dopamine antagonists, whereas new atypical antipsychotics such as risperadal and clozipine affect dopamine and serotonin. Of course problems with medications have been compliance and side effect profiles (APA. 2000). Older drugs are associated with side effects such as tardive dyskinesia (uncontrollable movements), whereas the atypical antipsychotic drugs have fewer side effects (but each drug still has a side effect profile). The side-effects of the medications often lead to their discontinuation by the patient. All medications for schizophrenia take several weeks before they take effect (another problem for the dopamine hypothesis as dopamine is blocked soon after the drug is taken) and up to 20% of patients will not respond to medication at all (Hyman & Fenton, 2003). The pharmacological treatments for psychotic illnesses have grown exponentially in the past quarter of a century using antipsychotic medications and mood stabilizers, which has led to a limited focus in the current psychiatric textbooks only describing the medications available and helping patients understand the limitations of what can be offered (Cohen, 2003; Sadock & Sadock, 2007).
The problem with the medical model of treatment for schizophrenia
Despite the use of medications, there are some pitfalls to the medical model. First, in the pre-neuroleptic period before these drugs were developed and before there were long-term follow-up studies approximately two-thirds of schizophrenic patients made good social recoveries (Bleuler 1968; Ciompi 1980). Based on a large meta-analysis of patients covering nearly a 100 years from 1895 to 1992 it also appears that outcome for persons with a diagnosis of schizophrenia is worse now than it was before treatment with neuroleptics medications dominated the field (Hegarty, et al., 1994). The World Health Organization's (WHO) findings from a nine-country study of schizophrenia indicated that at the five-year follow-up period nearly 63% of patients from third world developing countries were doing well compared to 39% of those from developed countries. The most parsimonious explanation that could be offered for this surprising finding is that only 16% of third world country patients were maintained on neuroleptics medications compared with 59% from developed countries (Whitaker, 2002). Moreover, patients on long-term medication therapy have significantly shorter life expectancies and a higher rate of other chronic health issues. In a similar vein there is an emergent body of research that indicates that many of the standard treatments in psychiatry (e.g., medications) are no more effective than active placebos (e.g., see Kirsch, 2010). Thus, the perhaps viewing schizophrenia as a brain disease is missing something. Moreover numerous studies that have demonstrated psychotherapy and understanding care is more effective for schizophrenia than medications have been ignored by modern psychiatry (Whitaker, 2002).
There have been successful non-medication approaches to treating schizophrenia in the past. For example the most
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