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[Benign myoclonic epilepsy in infant]
J M Prats-Viñas1, C Garaizar, C Ruiz-Espinoza
1Unidad de Neuropediatría; Hospital de Cruces, Barakaldo, 48903, Espana. med002206@nacom.es
Insights
Benign myoclonic epilepsy of infancy can have varied outcomes, with some children experiencing developmental challenges and later-onset seizures. Eyelid myoclonia at onset does not predict intellectual development or treatment response.
Area of Science:
- Neurology
- Pediatric Neurology
- Epileptology
Background:
- Benign myoclonic epilepsy of infancy (BMEI) is a rare epilepsy syndrome.
- Understanding its long-term prognosis and clinical spectrum is crucial for accurate diagnosis and management.
Observation:
- This study reviewed literature and presented seven cases of BMEI diagnosed using Dravet's criteria.
- Three males and four females were included, with follow-up ranging from 6 to 26 years.
Findings:
- Three patients (43%) showed unfavorable intellectual and behavioral development.
- Three patients experienced later-onset generalized seizures, including tonic-clonic seizures and absence status epilepticus.
- Eyelid myoclonia, occurring with limb and head myoclonic seizures, was observed in four patients but did not correlate with prognosis or treatment response.
Implications:
- BMEI may present with a broader spectrum of outcomes than previously recognized.
- The presence of eyelid myoclonia does not reliably predict developmental trajectory or treatment efficacy.
- Further research is needed to elucidate the long-term prognosis and identify potential prognostic markers in BMEI.
Objective:
To review the concept of benign myoclonic epilepsy of infancy in the literature as compared with our series of patients.
Patients And Methods:
We review the literature and describe seven personal patients, three males and four females, diagnosed with benign myoclonic epilepsy of infancy according to Dravet's criteria.
Results:
Six of the seven patients were followed along 6 26 years, three of whom showed an unfavourable evolution of their intellectual and behavioral development. Three of the seven patients, not necessarily the same just mentioned, presented with generalized seizures later during their follow up: tonic clonic in one, Petit Mal status in another, and absences with marked eyelid myoclonia in the third. Four of the seven patients showed well defined eyelid myoclonias simultaneously occurring with the arms and head myoclonic seizures at the beginning of the illness, without inferring a prognostic value of their intellectual development or their response to antiepileptic treatment.