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J Korean Child Neurol Soc. 2012 Jun;20(2):57-63. Korean. Original Article.
Suh J , Moon HH , Kwon S .
Department of Pediatrics, Kyungpook National University, School of Medicine, Daegu, Korea.

PURPOSE: Paroxysmal kinesigenic dyskinesia (PKD) is one of the movement disorders in which dyskinesia occurs in a part of the body by a sudden movement after a rest under a tension or a stress. This study was aimed to evaluate the clinical features of children and adolescents with PKD in Korea via analysing the patients who have treated in Department of Pediatrics, Kyungpook National University Hospital. METHODS: A total of seven children with PKD was involved in the study and their medial records were retrospectively evaluated. RESULTS: The mean age of the 7 subjects was 15.7 years (10.0-21.4 years old). The male to female ratio was 6:1. They presented with dystonia with the average duration of 10.5 seconds (3.5-17.5 seconds), which triggered by various sudden movements. No accompanying cormorbidities were noted. Their laboratory findings were unremarkable. Six of the patients, except one who refused treatment with medicine, responded well to medication and remained symptom free. The average time response to medication was 3.4 weeks (0.95-7.81 weeks). They were of treated with either oxcarbazepine (n=4, 14.9+/-5.8 mg/kg/day) or lamotrigine (n=2, 1.5+/-0.9 mg/kg/day). There was no significant difference between two groups in terms of age, response, adverse events, and so on. CONCLUSION: This study showed that clinical features of Korean children with PKD are quite similar to those of other countries. They responded well to the medication. In addition, lamotrigine can be an alternative choice for the treatment.

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