Apraxia Oromotor apraxia Oral-motor apraxia is the inability to volitionally sequence oral movements of the speech structure for nonspeech tasks in the absence of neuromuscular deficits such as paralysis or muscle weakness. Oral-motor apraxia is diagnosed when, despite intact sensory motor function an individual is unable to use these effector systems under voluntary control. Oral-motor apraxia UMLS:C4021845 Affected individuals may experience difficulty in performing movements involving the muscles that also are involved in speech (e.g., clicking the tongue, licking the lips, whistling). HP:0007301