PT - JOURNAL ARTICLE AU - Matsuda, W AU - Matsumura, A AU - Komatsu, Y AU - Yanaka, K AU - Nose, T TI - Awakenings from persistent vegetative state: report of three cases with parkinsonism and brain stem lesions on MRI AID - 10.1136/jnnp.74.11.1571 DP - 2003 Nov 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 1571--1573 VI - 74 IP - 11 4099 - http://jnnp.bmj.com/content/74/11/1571.short 4100 - http://jnnp.bmj.com/content/74/11/1571.full SO - J Neurol Neurosurg Psychiatry2003 Nov 01; 74 AB - Three patients with a persistent vegetative state after severe head injury are reported. They recovered from a prolonged disturbance of consciousness after the administration of levodopa. These patients all had parkinsonian features. On magnetic resonance imaging, the distribution of lesions implied a diffuse axonal injury involving the substantia nigra or ventral tegmental area. The existence of patients whose dopaminergic systems may have been selectively damaged by a severe head injury should be recognised because such individuals may respond to levodopa treatment.