My Baby's Head Looks a Bit Off — Could It Be Flat Head Syndrome?
- Jun 15
- 6 min read
You were bathing your baby or looking at photos from the weekend, and something caught your eye. One side of the back of their head looks flatter than the other. Or maybe the head seems a little wide and short when you look from above. You told yourself it was probably nothing, but the thought hasn't gone away.
If that sounds familiar, you are not alone. What you may have noticed is a common condition called Plagiocephaly (play-jee-oh-SEF-ah-lee) /Brachycephaly (brak-ee-SEF-ah-lee) or Flat Head Syndrome. The good news: when caught early, it is very manageable, and there is clear guidance on what to do next.
What Is Flat Head Syndrome?
Flat head syndrome is a broad term for head shape irregularities that develop in infants. There are a few different types:
Plagiocephaly is the most common. One side of the back of the head becomes flattened, causing the head to look asymmetrical. You might notice one ear sitting further forward than the other, or one side of the forehead appearing more prominent.
Brachycephaly happens when the back of the head flattens across a wider area, making the head appear shorter and wider when viewed from above.
These shapes develop because a baby's skull is soft and malleable in the early months of life. Spending a lot of time in one position, sleeping on the back, time in baby bouncers and car seats, or a preference for turning the head to one side, can create pressure on one area of the skull over time. Babies who spend a prolonged period in hospital after birth, such as in the NICU, are also at higher risk, as they often remain on their backs for extended stretches during those critical early weeks.
It is worth knowing: not every unusual head shape means flat head syndrome. A long and narrow head shape can sometimes be linked to a different underlying condition affecting the skull sutures, and would need assessment by a healthcare professional before deciding on treatment. When in doubt, bring your baby in for a proper check.
What Should I Look Out For?
As a parent, you know your baby best. Here are some signs that may be worth having assessed:
Flat or flattened area on the back or side of the head
Asymmetry, one side of the face or head looks noticeably different from the other
One ear appears further forward than the other when viewed from above
A preference for turning to one side, your baby consistently looks in one direction and resists turning the other way
A wider, rounder head when seen from above, with a flatter back
If your baby is younger than four months and you're noticing some of these signs, there is still a lot that can be done with simple repositioning techniques at home. If your baby is between four and seven months and the flat spot has not improved despite repositioning, it is worth seeking a formal assessment sooner rather than later, this is the window where helmet therapy tends to be most effective.
Can I Fix It at Home First?
For babies under four months, conservative approaches are recommended as the first step:
Tummy time — daily supervised time on the tummy when your baby is awake helps reduce pressure on the back of the head and strengthens the neck
Alternating head position — when putting your baby down to sleep, alternate which end of the cot their head rests toward
Vary positions — reduce prolonged time in car seats, baby bouncers, and rockers during waking hours
Alternate sides during feeding — switch arms when bottle feeding so your baby is not always looking in the same direction
These approaches can make a real difference in mild cases. The skull is most malleable in these early months, and even small changes in habit can help guide growth in the right direction.
However, if your baby is approaching four to five months and you are not seeing improvement, or the asymmetry looks more significant, it is time to get a professional assessment.
When Is Helmet Therapy Considered?
Baby helmet therapy may be recommended when:
The flat spot or asymmetry remains noticeable despite repositioning efforts
Your baby is in the four to twelve month age window (the optimal period for helmet therapy, when skull growth is still rapid, the older the baby the slower the skull grows, and the more growth the higher chance of successful treatment)
A clinical assessment confirms that the degree of asymmetry is likely to benefit from guided correction
The helmet works by gently guiding your baby's skull growth, it does not squeeze the head. Instead, it is custom-shaped to provide light contact over the prominent areas and leave space where growth is needed. As your baby's brain grows, the skull follows the path of least resistance, gradually rounding out into a more symmetrical shape.
What Does the Helmet Actually Do?
The cranial remoulding helmet used at OrthoKai is a custom-made orthosis, not a generic off-the-shelf product. Every helmet is individually crafted based on precise measurements of your baby's head, ensuring a proper fit from the start.
Here is how it works in practice:
Custom fit from the start. A 3D scan is taken to capture the exact shape of your baby's head. The helmet is then made to match, with space left in the areas where growth is needed, and gentle contact over the areas that need guidance.
Designed to grow with your baby. A well-made cranial helmet is designed to accommodate your baby's head growth throughout the treatment period. Most infants complete their full treatment without needing a replacement helmet.
Lightweight and ventilated options available. The helmets are made using 3D printing technology, which produces a lighter and more ventilated design, a welcome feature given our warm tropical climate.
Safe and non-invasive. The helmet is made from materials that are gentle on your baby's skin and designed for comfortable extended wear. Most babies adjust within the first week.
23 hours daily wear. The helmet is worn for 23 hours a day, with one hour off for bathing and skin care. Regular follow-up visits allow our team to check the fit, make small adjustments as your baby grows, and track progress.
How OrthoKai Can Help
Our team at OrthoKai provides flat head therapy across our centres in Singapore, Kuala Lumpur and Johor.
Here is what you can expect when you come to us:
Assessment. Our clinician will look at your baby's head shape, movement, and any postural preferences. If suitable, a 3D scan may be done, it is fast and completely non-invasive, to capture the exact shape of your baby's head.
Recommendation. Based on the assessment, we will explain clearly what we are seeing and whether helmet therapy is appropriate for your baby. Not every baby who comes to us needs a helmet, and we will never recommend one if it is not clinically indicated.
Fitting and adjustments. If therapy is recommended, your baby's custom helmet is made and then fitted at a follow-up appointment. We review the fit regularly and make adjustments as your baby grows.
Graduation. At the end of treatment, we do a final comparison of before and after scans, a little milestone moment that many of our families love.
If you are unsure whether your baby needs to be seen, bring them in anyway. An assessment at this stage is far easier than worrying for weeks. Our team is here to give you honest, clear guidance, and if repositioning at home is all that's needed, we will tell you that too.
Frequently Asked Questions
How do I know if my baby's flat spot is bad enough for a helmet?
A clinical assessment is the only reliable way to know. General signs that may indicate helmet therapy is worth discussing include noticeable asymmetry, one ear sitting forward of the other, or a flat spot that has not improved after consistent repositioning. The best time to find out is before your baby turns six months.
What is the best age to start baby helmet therapy ?
The four to seven month window is generally considered the optimal time to begin, as skull growth is fastest and most responsive during this period. Results are still achievable for babies up to twelve months, but may take longer. If your baby is approaching this window, it is better to get assessed sooner rather than waiting.
Will my baby be uncomfortable in the helmet?
Most babies take about a week to adjust, it's the same as when they first start wearing shoes. The helmet is custom-fitted to avoid pressure on sensitive areas, and is designed for comfortable extended wear. Our team will walk you through the first few days and what to expect, including skin checks and cleaning routines.
Does flat head syndrome affect brain development?
Flat head syndrome due to positional causes does not affect brain development or intelligence. The brain continues to grow normally. The concern is primarily cosmetic and, in some cases, related to facial symmetry. However, if you notice a very narrow or unusual head shape, always have it assessed to rule out any structural concerns.