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Overnight sleep EEG and cerebrospinal fluid monoamines in seizures induced by movement
Abstract:
Clinical, electrical and biochemical studies in an eight years old boy with movement-induced seizures were reported. The attack was usually triggered by sudden initiation of movement, but rarely occurred without any apparent movement. Repeated jumping provoked attacks constantly, which was recorded cinematographically. No abnormality was found either in ictal or interictal EEGs. Haloperidol aggravated the condition, but 1-DOPA had no effect, while DPH (100 mg/day) controlled attacks perfectly with the serum DPH concentration of just 2.0 ug/dl. In overnight sleep analysis, sleep rhythms and characters of REM sleep were not differed significantly from the standard. After DPH therapy, stabilization of sleep in general was noticed; that is, total sleep time prolonged, number of sleep stages decreased and interrupting awakening disappeared. Probenecid loading test revealed that 5-HIAA was normal, HVA high, and large amount of octopamine was detected in CSF.
Insights
This study details a case of movement-induced seizures in a child, effectively managed with diphenylhydantoin (DPH). DPH controlled seizures and improved sleep patterns, highlighting its therapeutic potential.
Area of Science:
- Neurology
- Clinical Neurophysiology
- Biochemistry
Background:
- Investigating the underlying mechanisms of movement-induced seizures in pediatric epilepsy.
- Evaluating the efficacy of various pharmacological interventions for this specific seizure type.
Observation:
- A case study of an eight-year-old boy experiencing seizures triggered by movement initiation.
- Cinematographic recording confirmed constant provocation of seizures by repeated jumping.
- Electroencephalograms (EEGs) showed no ictal or interictal abnormalities.
Findings:
- Diphenylhydantoin (DPH) at 100 mg/day effectively controlled seizures with serum levels of 2.0 ug/dl.
- Haloperidol aggravated symptoms, while 1-DOPA had no significant effect.
- Biochemical analysis of cerebrospinal fluid (CSF) revealed high homovanillic acid (HVA) and detectable octopamine, with normal 5-hydroxyindoleacetic acid (5-HIAA).
Implications:
- Suggests DPH as a potential treatment for movement-induced seizures, even in the absence of EEG abnormalities.
- Highlights the importance of biochemical markers in understanding seizure pathophysiology.
- Indicates potential benefits of DPH therapy on sleep architecture and stability in affected children.