Apraxia

n. loss of the ability to perform intentional motions due to an injury to the nervous system

Apraxia is a neurological disorder characterized by loss of the ability to execute or carry out learned purposeful movements, despite having the desire and the physical ability to perform the movements. It is a disorder of motor planning which may be acquired or developmental, but may not be caused by incoordination, sensory loss, or failure to comprehend simple commands (which can be tested by asking the person tested to recognize the correct movement from a series).
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Apraxia is neurological condition characterized by loss of the ability to perform activities that a person is physically able and [more]Apraxia - Community and Resources

Noun
1. inability to make purposeful movements
(hypernym) brain disorder, encephalopathy, brain disease

noun
being unable to make proper movements