Hypokinesia is a reduction in the speed of voluntary movements, which at worst may progress to an inability to initiate voluntary movement (akinesia). Repeated apposition of finger and thumb or foot tapping may be useful in demonstrated hypokinesia of gradual onset ("fatigue").
It may often coexist with bradykinesia and hypometria, and is a feature of disorders of the basal ganglia (akinetic-rigid or parkinsonian syndromes), for example:
Parkinson’s disease Multiple system atrophy
Progressive supranuclear palsy (Steele-Richardson-Olszewski syndrome)
Some variants of prion disease.