Park and Choi described chorea or dystonia developing after acute carbon monoxide poisoning. The authors are from Yonsei University in Seoul.
Patient selection: status post acute carbon monoxide poisoning
Clinical findings:
(1) time since poisoning 1 to 6 weeks
(2) delayed encephalopathy
(3) chorea or dystonia
(4) no other explanation
Chorea: a dyskinesia with abnormal, involuntary movements. It is due to overactivity of dopamine in an area controlling movement, most often the caudate lobe.
Dystonia shows abnormal muscle tone and involuntary contractions with muscular spasms and an abnormal posture. It is associated with lesions in the putamen or its afferent/efferent projections
The movement disorder may be temporary or chronic.
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