The jittery newborn and infant: a review

Area of Science:

• Neonatal Neurology
• Developmental Pediatrics

Background:

• Jitteriness is a common involuntary movement in newborns, primarily presenting as tremor.
• It is frequently associated with central nervous system excitation signs like hypermotility and hypertonicity.
• Differentiating jitteriness from myoclonus and seizures is crucial, though they can co-occur.

Purpose of the Study:

• To explore the pathogenesis and clinical significance of jitteriness in newborns.
• To differentiate jitteriness from other neurological conditions in infants.
• To emphasize the importance of identifying and treating underlying causes for better prognosis.

Main Methods:

• Clinical observation and assessment of neonatal movement disorders.
• Differential diagnosis of tremors, myoclonus, and seizures in the neonatal period.
• Review of pre-, peri-, and postnatal factors contributing to jitteriness.

Main Results:

• Jitteriness is characterized by tremor and often accompanied by signs of central nervous system excitation.
• "Coarse" tremor may indicate a higher likelihood of abnormality and potential relation to choreiform syndromes.
• The prognosis is determined by the nature and treatability of the underlying causes.

Conclusions:

• Jitteriness in newborns requires individualized evaluation and management focused on remediable causes.
• The underlying etiology, rather than the tremor itself, dictates the infant's outcome.
• Distinguishing jitteriness from seizure activity is critical for appropriate intervention.