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Symptoms of conversion disorder usually occur suddenly. Conversion disorder was typically observed in people ages 10 to 35, [7] affecting between 0.011% and 0.5% of the general population. [8] Conversion disorder presented motor or sensory symptoms including: Motor symptoms or deficits: Impaired coordination or balance
The International Statistical Classification of Diseases and Related Health Problems (ICD-10) refers to the diagnosis as "Other dissociative and conversion disorders". [1] Under the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM) , it is known as " Other specified dissociative disorder " ( OSDD ).
The International Statistical Classification of Diseases and Related Health Problems (ICD-10) refers to the diagnosis as "Other dissociative and conversion disorders". [2] Under the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM) , it was known as " Dissociative disorder not otherwise specified " ( DDNOS ).
In 1980, the DSM III added 'conversion disorder' to its list of conditions. The diagnostic criteria for this condition are nearly identical to those used for hysteria. The diagnostic criteria were: [citation needed] A. The predominant disturbance is a loss of or alteration in physical functioning suggesting a physical disorder.
Within DSM-5, patients presenting with PNES may meet the criteria for functional neurological disorder and in some cases, somatic symptom disorder, whilst in ICD-10 it may meet the criteria for a conversion disorder. [17]
There are problems with classification, diagnosis and therapeutic strategies of dissociative and conversion disorders which can be understood by the historic context of hysteria. Even current systems used to diagnose DD such as the DSM-IV and ICD-10 differ in the way the classification is determined. [29]
A revision of DSM-5, titled DSM-5-TR, was published in March 2022, updating diagnostic criteria and ICD-10-CM codes. [52] The diagnostic criteria for avoidant/restrictive food intake disorder were changed, [53] [54] along with adding entries for prolonged grief disorder, unspecified mood disorder and stimulant-induced mild neurocognitive disorder.
It is classified as a mental and behavioral disorder [3] and is variously categorized as a dissociative disorder, [1] a conversion disorder, [3] or a somatic symptom disorder. According to the Diagnostic and Statistical Manual of Mental Disorders ( DSM-5 ), dissociative fugue is a subset of dissociative amnesia .