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Dysdiadochokinesia

Name of Symptom/Sign:
**Dysdiadochokinesia**
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ICD-10
ICD-O:	{{{ICDO}}}
ICD-9	781.3
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DiseasesDB	{{{DiseasesDB}}}

Dysdiadochokinesia, dysdiadochokinesis, or DDK (from Greekdys "bad", dia "across", docho "receive", kinesia "movement") is the medical term for an inability to perform rapid, alternating movements. It is a feature of cerebellar ataxia.

It is commonly demonstrated by asking the patient to tap the palm of one hand with the fingers of the other, then rapidly turn over the fingers and tap the palm with the back of them, repeatedly. A simpler method is to ask the patient to demonstrate the movement of trying a door knob or screwing in a lightbulb.

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It uses material from the http://en.wikipedia.org/wiki/Dysdiadochokinesia Wikipedia article Dysdiadochokinesia.

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