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Flat head syndrome (plagiocephaly and brachycephaly)

Babies can sometimes develop a flattened head, known as flat head syndrome, as a result of long periods lying in the same position.

Flat head syndrome is common and affects around 1 in 5 babies. General development is not affected by flat head syndrome, and your baby will not experience any pain or other symptoms because of the condition.  

In most cases there is no cause for concern and their head shape will improve over time as they develop. You should speak to your health visiting team or GP if you’re concerned, or if you think your baby is having trouble moving their head. 

Useful links

NHS – Plagiocephaly and brachycephaly

Page last reviewed: 05-08-2025

Next review due: 05-08-2028