Conversion disorder is typically seen in people aged 10 to 35, and affects between 0.011% and 0.5% of the general population.Conversion disorder can present with motor or sensory symptoms including any of the following:
Motor symptoms or deficits:

Impaired coordination or balance
Weakness/paralysis of a limb or the entire body (hysterical paralysis or motor conversion disorders)
Impairment or loss of speech (hysterical aphonia)
Difficulty swallowing (dysphagia) or a sensation of a lump in the throat
Urinary retention
Psychogenic non-epileptic seizures or convulsions
Persistent dystonia
Tremor, myoclonus or other movement disorders
Gait problems (astasia-abasia)
Loss of consciousness (fainting)Sensory symptoms or deficits:

Impaired vision (hysterical blindness), double vision
Impaired hearing (deafness)
Loss or disturbance of touch or pain sensationConversion symptoms typically do not conform to known anatomical pathways and physiological mechanisms. It has sometimes been stated that the presenting symptoms tend to reflect the patients own understanding of anatomy and that the less medical knowledge a person has, the more implausible are the presenting symptoms. However, no systematic studies have yet been performed to substantiate this statement. Diagnosis
Definition
Conversion disorder is now contained under the umbrella term functional neurological symptom disorder. In cases of conversion disorder, there is a psychological stressor. The diagnostic criteria for functional neurological symptom disorder, as set out in DSM-5, are:

Specify type of symptom or deficit as:

With weakness or paralysis
With abnormal movement (e.g. tremor, dystonic movement, myoclonus, gait disorder)
With swallowing symptoms
With speech symptoms (e.g. dysphonia, slurred speech)
With attacks or seizures
With amnesia or memory loss
With special sensory loss symptoms (e.g.
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See also
List of cutaneous conditions
Pili multigemini – multiple hairs growing from the same source. Ringed hair

References


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