Conversion Disorder - Definition

Definition

DSM-IV defines conversion disorder as follows:

  • One or more symptoms or deficits are present that affect voluntary motor or sensory function suggestive of a neurologic or other general medical condition.
  • Psychological factors are judged, in the clinician's belief, to be associated with the symptom or deficit because conflicts or other stressors precede the initiation or exacerbation of the symptom or deficit. A diagnosis where the stressor precedes the onset of symptoms by up to 15 years is not unusual.
  • The symptom or deficit is not intentionally produced or feigned (as in factitious disorder or malingering).
  • The symptom or deficit, after appropriate investigation, cannot be explained fully by a general medical condition, the direct effects of a substance, or as a culturally sanctioned behavior or experience.
  • The symptom or deficit causes clinically significant distress or impairment in social, occupational, or other important areas of functioning or warrants medical evaluation.
  • The symptom or deficit is not limited to pain or sexual dysfunction, does not occur exclusively during the course of somatization disorder, and is not better accounted for by another mental disorder.

The nature of the association between the psychological factors and the neurological symptoms remains unclear. Earlier versions of the DSM-IV employed psychodynamic concepts, but these have been incrementally removed from successive versions.

The tenth revision of the World Health Organization's International Classification of Diseases uses the term "conversion" as an alternative descriptor for the dissociative disorders class of mental and behavioural disorders (i.e. the F44 class), with the explicit suggestion that dissociative and conversion symptoms probably share common psychological mechanisms. In ICD-10, the dissociative disorders class includes 10 disorders that, in addition to specific criteria for each individual disorder, must each meet the following general criteria:

  • No evidence of a physical disorder that can explain the symptoms that characterize the disorder (but physical disorders may be present that give rise to other symptoms);
  • Convincing associations in time between the symptoms of the disorder and stressful events, problems or needs.

Read more about this topic:  Conversion Disorder

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