The Moro reflex, also known as the startle reflex, is an involuntary motor response observed in newborns and infants. It typically involves a sudden extension of the arms and legs, followed by a drawing in of the limbs, often accompanied by crying. While this reflex is expected in early infancy, its persistence beyond a certain age may indicate neurological issues. Assessing for the presence or absence of this reflex in a child beyond the typical age of disappearance (usually around 4-6 months) involves observing the child’s reaction to sudden stimuli, such as a loud noise or a perceived loss of support.
Evaluation of retained primitive reflexes, including the one described, is important as its persistence can impact motor development, coordination, and sensory processing. Understanding the presence of such reflexes in older children can provide valuable insights into potential developmental delays or underlying neurological conditions. Historically, the evaluation of these reflexes has been a cornerstone of pediatric neurological examinations, informing diagnoses and guiding therapeutic interventions.
