apraxia
Pronunciation: ah-PRAK-see-ah
Inability to perform learned motor movements despite intact motor function and comprehension.
Full Definition
Apraxia is a neurological disorder characterized by the inability to execute or carry out familiar, purposeful movements despite having the physical ability and understanding to perform them. This condition typically results from lesions in the left parietal lobe or connecting pathways. There are several subtypes including ideomotor apraxia (cannot perform gestures on command), ideational apraxia (cannot sequence complex actions), and limb-kinetic apraxia (loss of fine motor skills). In clinical documentation, apraxia must be differentiated from weakness, sensory loss, or comprehension deficits, as the motor and cognitive systems remain intact.
Usage
Usage note: Specify subtype when known. Do not confuse with ataxia (coordination disorder).
In Context
- "The patient demonstrated ideomotor apraxia, unable to mime brushing teeth despite understanding the request." — Neurological assessment
- "Occupational therapy focused on compensatory strategies for constructional apraxia affecting daily activities." — Rehabilitation plan