CARBON MONOXIDE INTOXICATION INDUCED MANIA

 
Secondary mania in a patient with delayed anoxic encephalopathy after carbon monoxide intoxication

Department of Neurology, Kwandong University College of Medicine, Myongji Hospital, Gyeonggi, Korea

Received 6 July 2005;
accepted 19 October 2005.
Available online 28 August 2006.
 
Abstract
Mania is a rare clinical manifestation of delayed anoxic encephalopathy (DAE). Prior case reports on mania after hypoxic injury involved patients with a previous history of mania or depression, potentially reflecting a recurrence of premorbid mood disorders after hypoxia rather than pure secondary mania.
 
Herein, we report a 55-year-old woman with no past history of neurological or psychiatric illness, who developed mania as a symptom of DAE after carbon monoxide intoxication. Brain magnetic resonance imaging showed diffuse white matter lesions, particularly visible in the frontal white matter. This frontal lesion may have prevented frontal inhibition from being transmitted to the basotemporal limbic area, resulting in mania manifested as a burst of limbic activity
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