akinetic mutism
Pronunciation: ay-ki-NET-ik MYU-tizm
State of profound apathy and lack of spontaneous movement or speech, despite preserved consciousness and basic motor function.
Full Definition
Akinetic mutism is a neurological syndrome characterized by severe reduction in spontaneous movement, speech, and emotional expression, while basic arousal and simple responses to stimulation remain intact. The condition typically results from bilateral damage to the anterior cingulate cortex, supplementary motor areas, or mesencephalic structures. Patients appear awake and may track with their eyes, but demonstrate profound apathy and lack of initiative for voluntary action. Unlike catatonia or severe depression, the motor and speech apparatus remain fundamentally intact, making this a disorder of motivation and drive rather than execution.
Usage
Usage note: Hyphenated compound term. 'Akinetic' from Greek meaning 'without movement'.
In Context
- "Following the anterior cerebral artery infarct, the patient developed akinetic mutism with preserved awareness but no spontaneous movement." — Neurological consultation
- "The patient's akinetic mutism gradually improved with dopaminergic treatment over several weeks." — Follow-up assessment