A member asked:

My 2 month old still have his startle reflex, when should it go away? he wont sleep unless swaddle because of it. we tried to transfer to a sleepsack but he wont sleep without his arms being down?

Q: my 2 month old still have his startle reflex, when should it go away? he wont sleep unless swaddle because of it. we tried to transfer to a sleepsack but he wont sleep without his arms being down?

: This is usually active until at least 3 months in most.

3 doctors weighed in across 2 answers

Dr. James Ferguson answered

This is usually active until at least 3 months in most.

Dr Kuitems agreed

Answered 5/27/2023

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Dr. Jay Park answered

Moro reflex, aka startle reflex, is fully developed by 37 weeks of gestational age and lasts 5-6 months. It's unlikely persistence of Moro reflex affects infant's sleep one way or another.

Answered 5/25/2023

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A member asked:

My 2 month old still have his startle reflex, when should it go away? he wont sleep unless swaddle because of it. we tried to transfer to a sleepsack but he wont sleep without his arms being down?

3 doctors weighed in across 2 answers

Dr. James Ferguson answered

Dr Kuitems agreed

Dr. Jay Park answered

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