Schizophrenia classification
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Vindhya BellamKonda, M.B.B.S [2] Irfan Dotani
Classification
- Historically, schizophrenia in the West was classified into simple, catatonic, hebephrenic (now known as disorganized), and paranoid.
- The DSM- IV contains five sub-classifications of schizophrenia: Paranoid, disorganized, catatonic, undifferentiated and residual type, but, this classification has been eliminated due to their limited diagnostic stability, low reliability and poor validity.[1]
- There is no established system for the classification of schizophrenia as per the diagnostic and statistical manual of mental disorders, Fifth Edition, (DSM-V)
- According to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, (DSM-V, to meet the criteria for diagnosis of schizophrenia, the patient must have experienced at least 2 (or more) of the following symptoms:[2]
- Delusions
- Hallucinations
- Disorganized speech
- Disorganized or catatonic behavior
- Negative symptoms
- At least 1 of the symptoms must be the presence of delusions, hallucinations, or disorganized speech.
- Continuous signs of the disturbance must persist for at least 6 months, during which the patient must experience at least 1 month of active symptoms (or less if successfully treated), with impairment in social, occupational and other significant areas of functioning. The symptoms are not attributable to any other psychiatric , medical or substance use disorder.[3]
- If there is a history of autism spectrum disorder or a communication disorder of childhood onset, diagnosis of schizophrenia is made only if prominent delusions or hallucinations,in addition to the other required symptoms of schizophrenia, are also present for at least 1 month(or less if successfully treated).[4]
References
- ↑ Owen MJ, Sawa A, Mortensen PB (2016). "Schizophrenia". Lancet. 388 (10039): 86–97. doi:10.1016/S0140-6736(15)01121-6. PMC 4940219. PMID 26777917.
- ↑ Laursen TM, Munk-Olsen T, Vestergaard M (2012). "Life expectancy and cardiovascular mortality in persons with schizophrenia". Curr Opin Psychiatry. 25 (2): 83–8. doi:10.1097/YCO.0b013e32835035ca. PMID 22249081.
- ↑ GBD 2015 Mortality and Causes of Death Collaborators (2016). "Global, regional, and national life expectancy, all-cause mortality, and cause-specific mortality for 249 causes of death, 1980-2015: a systematic analysis for the Global Burden of Disease Study 2015". Lancet. 388 (10053): 1459–1544. doi:10.1016/S0140-6736(16)31012-1. PMC 5388903. PMID 27733281.
- ↑ Buckley PF, Miller BJ, Lehrer DS, Castle DJ (2009). "Psychiatric comorbidities and schizophrenia". Schizophr Bull. 35 (2): 383–402. doi:10.1093/schbul/sbn135. PMC 2659306. PMID 19011234.