what is it called the reflex where a baby doesnt let go
It’s usually called the palmar grasp reflex. That’s the newborn reflex where a baby automatically closes their hand around a finger or object and may seem like they “won’t let go”.
What it is
This reflex is normal in newborns and happens without the baby thinking about it. It’s one of several primitive reflexes that help babies develop early motor skills.
When it fades
The palmar grasp reflex typically starts to disappear by about 5–6 months of age, though timing can vary a bit. If a reflex stays unusually strong much longer than expected, doctors may want to check development or the nervous system.
Related reflexes
A few other common newborn reflexes are:
- Moro reflex : startles and throws arms out when startled.
- Rooting reflex : turns toward a cheek touch and makes sucking motions.
- Tonic neck reflex : “fencing” posture when the head turns.
Simple example
If you place your finger in a newborn’s palm, the baby may grip it very firmly. That strong little squeeze is the palmar grasp reflex.
| Reflex | What it looks like | Typical fade time |
|---|---|---|
| Palmar grasp | Baby closes hand around an object or finger | About 5–6 months | [8]
| Moro | Arms fling out, then pull back in after a startle | About 2–6 months | [6][8]
