Cerebellar Testing of Diadochokinesia (Rapid Alternating Movements)
III. Technique: Rapid Forearm rotation
Patient rests the dorsum of one hand against their thigh or other hand
Patient flips their hand over, palm side up
Patient repeats hand flipping as quickly as they can (generating a slap sound with each flip)
IV. Technique: Alternative
Tap each finger tip against the thumb of the same hand
Move from one finger to the next, each tapping the pad of the thumb
Abnormal testing (Dysdiadochokinesia) suggests cerebellar or coordination dysfunction
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This page was written by Scott Moses, MD, last revised on 2/8/2015 and last published on 10/13/2020.