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Cerebellar damage can cause not only disturbance in motor control but also higher brain dysfunction known as cerebellar cognitive affective syndrome (CCAS). Although CCAS has a high prevalence, the precise mechanism and effective medications are unknown. We herein report a CCAS patient whose symptoms were ameliorated with the cholinesterase inhibitor donepezil. N-isopropyl-p- 123 I-iodoamphetamine-single-photon emission computed tomography showed improvement in hypoperfusion in the contralateral frontal and parieto-temporal lobes. Some projections with cholinergic transmission might form a functional connectivity between the cerebellum and contralateral association cortices, and cholinergic dysfunction is involved in CCAS pathophysiology. Donepezil might be worth considering for some CCAS patients.

Cerebellar Cognitive Affective Syndrome Improved by Donepezil