Babies may demonstrate this reflex up to 9 months old. This primitive reflex first develops in the womb and helps the baby coordinate their eyes and control fine movement. The tonic neck reflex is a movement where a baby looks to the side with one arm extended and the other bent it may look like they are imitating holding a sword or firing an arrow. Babies tend to outgrow this reflex at 3–6 months. Parents or caregivers should not worry when they notice this behavior. If a baby hears a loud sound or senses a sudden movement, they may throw their head back and suddenly stiffen and extend their arms. The Moro reflex, or startle, reflex is a healthy part of a baby’s development. Sometimes, when babies show signs of a seizure, they are demonstrating healthy reflexes. Therefore, a person may observe symptoms of a tonic seizure followed by signs of a clonic seizure. This refers to a type of seizure that starts with stiffening (tonic phase) followed by jerking (clonic phase). bend and hold their arms and legs in awkward positionsĬlonic means twitching or jerking, so when a baby has a clonic seizure, they may display repeated, uncontrolled jerking muscle movements.ĭuring this seizure, a parent or caregiver may notice the baby is clenching or twitching parts of its body, including:.
When a baby experiences a tonic seizure, they may: However, these signs may resemble usual, everyday movements and may be difficult to spot. These types of seizures are most common in the newborn period. The symptoms a baby experiences depend on the type of seizure they have. Share on Pinterest Cavan Images/Getty Images
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