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KMID : 0877220020060010057
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Journal of Korean Epilepsy Society
2002 Volume.6 No. 1 p.57 ~ p.60
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Two Cases of Nocturnal Enuresis Associated with Carbamazepine
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Rho Young-Il
Moon Kyung-Rye
Park Yeong-Bong
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Abstract
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Urinary voiding disorders owing to anticonvulsants medications have been reported rarely. I have recently seen 2 patients in whom carbamazepine (Tegretol) therapy was associated with nocturnal enuresis. The first patient was a 7-year-old boy in whom carbamazepine 150 mg twice a day (15 mg/kg, early morning plasma level 10 microgram/mL before the morning dose) was prescribed for control of complex partial seizure. Approximately 5 months after starting to take the drug he developed frequency of micturition and urgency. Soon followed by nocturnal enuresis. His development was normal. Sphincter control was complete at 3 years of age. Urinalysis was negative. Carbamazepine discontinued and within 1 week all urinary symptoms disappeared. Second patient was a 6-year-old girl in whom carbamazepine 100 mg twice a day (15 mg/kg, early morning plasma level 7.06 microgram/mL before the morning dose) was prescribed for control of simple partial seizure. Approximately 10 weeks after starting to take the drug he developed urgency, and then after 2 weeks followed by daily nocturnal enuresis. Her development was normal. Urinalysis was negative. Carbamazepine was changed to oxcarbazepine, and the patient’s urinary symptoms abated within 2 weeks disappeared and did not recur. The nocturnal enuresis in both patients can be attributed to carbamazepine;it appeared after 3-4 months of the start of treatment;during seizure-free period and disappeared on discontinuation of carbamazepine. The drug should be discontinued before any other invasive investigations are undertaken to clarify the cause of the urinary symptoms.
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KEYWORD
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Nocturnal enuresis, Carbamazepine
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