What causes exaggerated startle reflex in babies?

Loud noises, intense light, and sudden movements can trigger a baby’s Moro reflex. They can even trigger it in themselves when they move suddenly. The sensation of falling can also be a trigger.

Why is my baby startling so much?

“The startling reflex, known to physicians as the Moro reflex, is usually caused when your baby’s head changes position or falls back abruptly, or when she hears a loud or unusual noise,” explains Rallie McAllister, MD, MPH, a family physician and coauthor of The Mommy MD Guide to Your Baby’s First Year.

What does an exaggerated Moro reflex mean?

An exaggerated Moro reflex can be seen in infants with severe brain damage that occurred in-utero, including microcephaly and hydrancephaly. Exaggeration of the Moro reflex, either due to low threshold or excessive clutching, often occurs in newborns with moderate hypoxic-ischemic encephalopathy.

What causes an overactive startle reflex?

The exaggerated startle reflex in HPX is probably caused by brainstem pathology. This is supported by the concentration of glycine receptors in the brainstem and spinal cord (Rousseau et al., 2008). In addition, symptomatic excessive startling is usually caused by brainstem damage (Bakker et al., 2006).

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When should I be concerned about startle reflex?

When to call your doctor

When a baby doesn’t have normal reflexes, it can be sign of potential problems. If the Moro reflex is lacking on one side of your baby’s body, it can be the result of a broken shoulder or a nerve injury. If the reflex is lacking on both sides, it might suggest brain or spinal cord damage.

What is the difference between Moro and startle reflex?

The Moro reflex is often called a startle reflex. That’s because it usually occurs when a baby is startled by a loud sound or movement. … A baby’s own cry can startle him or her and trigger this reflex. This reflex lasts until the baby is about 2 months old.

Why does my 5 month old startle so easily?

At birth all babies have a nervous system that is still developing. One sign of this development is that until 4 – 6 months of age infants startle easily as they experience a whole new world of sensations that were absent in the womb.

What is Spinal Galant reflex?

The Spinal Galant Reflex

This reflex causes babies to curve their hip outward if the lower back is stroked next to the spine. Its purpose is to encourage movement and develop range of motion in the hip in preparation for walking and crawling.

What is a startle seizure?

Startle epilepsy is a type of reflex epilepsy in which seizures are provoked by loud noises or sudden surprises. Most patients with startle epilepsy are only sensitive to one sensory modality (i.e. temperature, taste, sound, pressure).

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When does kernicterus occur?

Kernicterus is likely to occur when serum levels of unconjugated bilirubin are greater than 30 mg/dl and is unlikely to occur when levels are lower than 20 mg/dl. The areas of the brain damaged by bilirubin toxicity are the basal ganglia, hippocampus, cerebellum, and nuclei of the floor of the fourth ventricle.

How do I reduce startle reflex?

Ways to Help Your Baby Avoid Startling From the Moro Reflex

  1. Reduce outside triggers. Try to keep lights dim or at an even intensity. …
  2. Hold your baby close to your body as you lower them down into their crib. The more that your baby feels protected, the less likely they will startle. …
  3. Swaddle your baby.

What is Babinski reflex baby?

Babinski reflex

When the sole of the foot is firmly stroked, the big toe bends back toward the top of the foot and the other toes fan out. This is a normal reflex up to about 2 years of age.

Can Moro reflex cause seizures?

While the Moro reflex is completely normal, there are some sudden movements that need immediate attention, such as a seizure. There are different types of seizures and can sometimes be hard to recognize.

How do you stop the startle reflex without swaddling?

For parents who do not want to swaddle, simply placing their baby’s head down extra gently can help them avoid the Moro reflex.