What Parents Need to Know About Flat Head Syndrome in Babies

Ellie Green
Authored by Ellie Green
Posted: Thursday, July 3, 2025 - 16:48

As a parent, the last thing you want is for something to be “wrong” with your baby, but flat head syndrome (also known as positional plagiocephaly) is actually something that’s quite common. According to the NHS, around 1 in 5 babies in the UK are affected by flat head syndrome (plagiocephaly). While it can be a little unsettling to notice a flat spot on your baby’s head, it’s important to know that it’s usually something that can be easily fixed with the right approach.

In this article, we are discussing what exactly is flat head syndrome, why early diagnosis matters, when helmet therapy might be recommended, and what you can expect from the treatment process.

What Is Flat Head Syndrome (Plagiocephaly)?

So, let’s break it down. Plagiocephaly is a condition that occurs when a baby’s head develops a flat spot or asymmetry due to prolonged pressure on one side of their skull. It’s not a serious medical condition, but it’s one that can affect your baby’s appearance, which is why it’s important to address it.

There are two main types:

  • Plagiocephaly: Flattening on one side of the head.
  • Brachycephaly: Flattening across the back of the head, which often makes the head appear wider.

It’s actually pretty common and usually happens when babies spend too much time lying on their backs. This usually occurs in the early months, when your baby’s skull is still soft and malleable.

Many parents find this out the hard way, especially after their baby starts spending more time in car seats, swings, or lying flat for long periods. But don’t worry, it’s treatable, and you’re not the only one going through it!

Importance of Early Diagnosis Between 3–6 Months

Here’s the thing, early diagnosis is key. Babies’ skulls are still soft and flexible between 3 and 6 months, making it the ideal time to intervene and prevent flat spots from becoming more severe. This period is when their skulls are most responsive to changes and is the ideal time to consult a specialist for any treatments.

By 6 months, the skull starts to harden and it can become more challenging to reshape. So, the sooner you catch it, the easier it will be to correct. That’s why regular check-ups are so important. 

If you notice any signs of flat spots or head tilting, it’s a good idea to chat with your health visitor or pediatrician as soon as possible. Getting a second opinion never hurts, especially if you’re worried.

What Is Helmet Therapy?

Most cases of flat head syndrome respond well to repositioning—tummy time, switching sleep positions, and babywearing. But if these methods are not making a difference, helmet therapy may be recommended. 

According to the London Orthotic Consultancy, one of the UK’s leading providers of orthotics, helmet therapy is most effective when started between 4 and 7 months of age. The treatment typically lasts between 3 and 6 months, depending on the severity of the flattening and how early therapy begins.

LOC notes that while treatment is most effective in younger infants, they have successfully treated babies up to 16 months old using custom-fitted helmets. The helmet works by gently guiding the growth of the skull. 

How Long Does Helmet Therapy Take?

It’s important to set realistic expectations about helmet therapy. The exact duration depends on the severity of the condition and how early treatment is started.

  • Helmet Fitting: When your baby gets their helmet, it’s custom-designed to ensure it fits perfectly and provides the right support. The helmet applies gentle pressure to the flattened areas of the skull and encourages the rounded areas to grow.
  • Adjustments: As your baby grows, the helmet will be adjusted to maintain an optimal fit. This is why regular visits to the clinic are so important.

Don’t worry if it seems like a long process, it’s completely normal. In fact, over 80% of babies who undergo helmet therapy see a significant improvement in their head shape.

Final Thoughts

If you’re concerned about your baby’s head shape, trust your instincts and speak to a medical professional. Early action can make a big difference, and even just getting reassurance from a specialist can bring peace of mind. Whether treatment involves simple repositioning or a custom helmet, support is available. Every baby is different, and there’s no one-size-fits-all approach—but you’re not alone in this journey. With gentle care and timely guidance, most babies go on to thrive. Remember, you’re doing a great job by staying informed and advocating for your child’s well-being.

If you’re looking for more helpful parenting tips and articles on family life, don’t forget to check out the Lifestyle Daily Family section.


Image: www.freepik.com

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