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Updated: Feb 4, 2026
Conducting Miller-Urey Experiments
Published on: January 21, 2014
Electroclinical Pattern and Epilepsy Evolution in an Infant with Miller-Dieker Syndrome
Raffaele Falsaperla1, Simona Domenica Marino1, Silvia Marino1
1Pediatric and Pediatric Emergency Department, University Hospital "Policlinico-Vittorio Emanuele," Catania, Italy.
Insights
This study tracked an infant with Miller Dieker Syndrome (MDS), finding variable epileptic seizures and Electroencephalographic (EEG) patterns. Modified hypsarrhythmia (MH) on EEG correlated with early subtle spasms and later infantile spasms (IS).
Area of Science:
- Pediatric Neurology
- Clinical Neurophysiology
- Genetics and Rare Diseases
Background:
- Miller Dieker Syndrome (MDS) is a rare genetic disorder associated with significant developmental delays and neurological complications.
- Epileptic seizures are a common manifestation in infants with MDS, presenting diverse clinical and electrophysiological characteristics.
- Understanding the electroclinical course of epilepsy in MDS is crucial for early diagnosis and management.
Purpose of the Study:
- To investigate the electroclinical progression of epilepsy in an infant diagnosed with Miller Dieker Syndrome (MDS).
- To correlate specific Electroencephalographic (EEG) patterns with the types of epileptic seizures observed during the first year of life.
- To document the developmental trajectory alongside seizure activity and EEG findings in this cohort.
Main Methods:
- A case study approach was employed, focusing on a single infant diagnosed with MDS shortly after birth.
- Clinical assessments and serial Electroencephalographic (EEG) recordings were conducted from six months to one year of age.
- Developmental milestones and seizure semiology were meticulously documented.
Main Results:
- The infant exhibited severe developmental delay and a spectrum of seizure types, evolving from brief tonic movements to subtle spasms and classical infantile spasms (IS).
- Electroencephalographic (EEG) recordings revealed a modified hypsarrhythmia (MH) pattern at six months, correlating with subtle spasms.
- At seven months, the EEG continued to show MH, which was associated with the clinical manifestation of classical infantile spasms (IS).
Conclusions:
- The electroclinical presentation of epilepsy in this infant with Miller Dieker Syndrome (MDS) was highly variable.
- A modified hypsarrhythmia (MH) EEG pattern was observed, initially correlating with subtle spasms and subsequently with classical infantile spasms (IS).
- The study highlights the dynamic relationship between EEG findings and seizure semiology in MDS during infancy.
Aim Of The Study:
To evaluate the electroclinical course and the correlation Electroencephalographic (EEG) pattern and epileptic seizures in an infant with Miller Dieker Syndrome (MDS) during the first year of life.
Materials And Methods:
MDS was diagnosed in the infant soon after birth and followed up from six months of life to one year, at the Department of Pediatrics, General Pediatric Operative Unit, Policlinico Vittorio Emanuele, University Hospital, XCatania, Italy, with clinical and serial EEG recording.
Results:
Aside from severe delay in the developmental milestone, the onset of the seizures was first noticed by the parents at the age of 4 months as brief slow tonic movements; at 6 months as tonic movements of the upper limbs with a slow rotations of the trunk, i.e. "subtle spams"; and at 7 months as typical "infantile spams" and tonic seizures. The EEG recording registered pattern of modified hypsarrhythmia (MH) correlated with "subtle spams" at the age of 6 months and at the age of 7 months the same EEG recording of MH associated to clinical expression of classical Infantile Spams (IS).
Conclusions:
In this infant, the EEG pattern and epileptic seizures were widely variable ranging clinically from brief anomalous movements to "subtle spams" and to typical infantile spams. At the same time, the EEG recording manifested first with MH and one month later with classical hypsarrhythmia. The EEG recording MH correlated first with clinical expression of subtle spams and the EEG remaining unchanged with the classical clinical expression of infantile spams.
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