Which reflex disappears by 2 to 4 months of age?

The Moro reflex, often referred to as the startle reflex, typically disappears by 2 to 4 months of age. This reflex is characterized by a baby's response to a sudden noise or movement where they spread their arms out and then pull them back in, often accompanied by crying. Its presence is a normal part of infant development, indicating a healthy neurological function. As the infant matures and gains better motor control and coordination, the Moro reflex becomes less prominent and eventually fades, correlating with the development of voluntary movements and the ability to self-soothe.

Understanding the timeline of reflex development is important in pediatrics, as persistence or absence of reflexes beyond expected time frames can indicate potential developmental issues.