Dysdiadochokinesia or adiadochokinesia is a difficulty in performing rapid alternating movements, for example pronation/supination of the arms, tapping alternately with the palm and dorsum of the hand, tapping the foot on the floor.
Dysdiadochokinesia is a sign of cerebellar dysfunction, especially hemisphere disease, and may be seen in association with asynergia, ataxia, dysmetria, and excessive rebound phenomenon. It may reflect the impaired checking response seen in cerebellar disease.
Dysdiadochokinesia may also be seen with disease of the frontal lobes or basal ganglia.
Asynergia; Ataxia; Cerebellar syndromes; Dysmetria; Rebound phenomenon