[Non-epileptic paroxysmal disorder in neonates]

Area of Science:

• Neonatal Neurology
• Pediatric Neurology
• Clinical Neurophysiology

Background:

• Non-epileptic paroxysmal disorders are frequent in neonates.
• These events are often misdiagnosed as epileptic seizures due to their intensity.
• Accurate differentiation is crucial for appropriate management and prognosis.

Purpose of the Study:

• To update current understanding of neonatal tremors, benign sleep myoclonus (MNBS), and hyperekplexia.
• To differentiate these conditions from true epileptic seizures.
• To provide guidance on diagnosis and management.

Main Methods:

• This is a review article.
• Concepts regarding tremors, MNBS, and hyperekplexia were updated.
• Clinical and electrophysiological characteristics were analyzed.

Main Results:

• Neonatal tremors are frequent; prognosis is good in idiopathic cases, but association with hyperexcitability syndromes requires investigation.
• Benign sleep myoclonus (MNBS) is characterized by brief myoclonus during sleep, normal child development, and normal EEG.
• Hyperekplexia is a rare genetic disorder with hypertonia and exaggerated startle responses, treatable with clonazepam.

Conclusions:

• Distinguishing non-epileptic paroxysmal disorders from epileptic seizures in neonates is essential.
• Tremors, MNBS, and hyperekplexia have distinct clinical features aiding differentiation.
• Accurate diagnosis leads to appropriate prognosis and treatment, as exemplified by clonazepam for hyperekplexia.