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Epilepsia partialis continua in a case of MELAS: clinical and neurophysiological study
P Veggiotti1, V Colamaria, B Dalla Bernardina
1Divisione di Neuropsichiatria Infantile, Fondazione Istituto Neurologico C Mondino IRCCS, Pavia, Italy.
Abstract:
There are few reports in the literature dealing with the association between mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (MELAS) and epilepsia partialis continua (EPC) in children. We report the case of a child presenting with numerous stroke-like episodes associated with EPC which, despite therapy, were not controlled and aggravated the clinical condition of our patient. We present the neuroradiological, biochemical, genetic and muscle biopsy findings, and EEG characteristics, with attention to polygraphic recordings which were done during wake and sleep periods. We consider the correlation with other possible etiological factors relating to EPC and in particular coinvolvement of the basal ganglia as a cause of EPC in our patient.
Insights
This study details a child with mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (MELAS) experiencing severe, uncontrolled epilepsia partialis continua (EPC). The findings highlight the complex interplay between MELAS and EPC, emphasizing basal ganglia involvement.
Area of Science:
- Neurology
- Genetics
- Pediatrics
Background:
- Mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (MELAS) is a rare mitochondrial disorder.
- Epilepsia partialis continua (EPC) is a rare form of epilepsy characterized by continuous focal seizures.
Observation:
- This report presents a pediatric case with numerous stroke-like episodes and severe, therapy-resistant epilepsia partialis continua (EPC).
- The patient exhibited characteristic MELAS features, including neurological deficits and lactic acidosis.
- Neuroradiological, biochemical, genetic, and muscle biopsy findings were analyzed, alongside detailed EEG and polygraphic recordings during wake and sleep.
Findings:
- The study identified a strong association between MELAS and EPC in the presented pediatric case.
- Despite aggressive treatment, the EPC remained uncontrolled, exacerbating the patient's clinical condition.
- Coinvolvement of the basal ganglia was considered a potential etiological factor for EPC in this patient.
Implications:
- This case underscores the challenges in managing refractory EPC in children with MELAS.
- Understanding the specific mechanisms linking MELAS and EPC, particularly basal ganglia involvement, is crucial for developing targeted therapies.
- Further research is warranted to elucidate the pathophysiology and optimize treatment strategies for this rare combination of conditions.