akinetic mutism
Pronunciation: ay-ki-NET-ik MYOO-tizm
Neurological state characterized by profound apathy, absence of spontaneous movement, and muteness despite preserved consciousness and basic motor function.
Full Definition
Akinetic mutism is a severe neurological syndrome characterized by a profound reduction in spontaneous movement and speech production, despite preservation of consciousness and basic motor capabilities. Patients appear awake and can track visually but demonstrate extreme apathy and lack of initiative for voluntary actions. The condition typically results from bilateral frontal lobe damage, anterior cingulate cortex lesions, or damage to the mesencephalic reticular formation. Unlike catatonia or stupor, patients with akinetic mutism maintain sleep-wake cycles and basic physiological functions but exhibit a profound disconnection between awareness and action.
Usage
Usage note: Distinguished from catatonia by preserved consciousness and from locked-in syndrome by ability to move when prompted.
In Context
- "Following anterior cingulate surgery, the patient developed akinetic mutism requiring intensive rehabilitation." — Neurosurgical follow-up note
- "The differential diagnosis included akinetic mutism versus severe depression given the patient's profound apathy." — Neuropsychiatry consultation