June 2026
What Does a Flat Head Look Like in Babies?
Noticing something different about your baby's head shape can be worrying. Many parents search for this because they are unsure whether what they are seeing is normal or something they should act on.
This guide explains what a flat head, also called flat head syndrome, looks like, how it differs from normal head shape variation, and how to know when it makes sense to check more closely. It is based on the same head-shape measurement principles used by pediatric clinicians worldwide.
What parents usually mean when they ask "does my baby have a flat head"
A flat head in babies usually looks like a flat spot, an area of the head that appears flatter than the rest, most often a flat spot on the back of the head or on one side. Parents may notice that the head looks uneven from above, less rounded at the back, or slightly asymmetrical. These changes are often easiest to see when looking down at a baby's head from above.
What a normal baby head shape looks like
A normal newborn or infant head is soft and still developing, especially in the first months of life. Some variation is expected. A typical head shape looks:
☐ round and balanced from above,
☐ appears even on both sides and curved at the back
☐ ears are aligned from top view,
☐ eyes are both the same size
☐ eyebrows are aligned
☐ no facial asymmetry
In general, a typical head has an overall smooth curved shape with some natural dents which are common during skull formation. When you place a flat head vs a normal head side by side, the difference is in that even curve at the back: a normal head stays rounded, while a flat head shows a flatter area on one side or across the back.
What a flat head looks like from different angles
A flat head can appear in different ways. It is flattened on one side, flattened at the back, or a combination of both. These differences range from subtle to obvious, and they show up in the unevenness at the back of the head, the position of the ears, and the symmetry of the face.. The more signs that are present, the more noticeable the flattening tends to be, sometimes making the head look lopsided or uneven.
What a flat head looks like from the top and side
From above, a flat head may look wider on one side, appear less oval and more slanted, or have one side of the back of the head that looks flatter. The view from the top also reveals the position of the ears: with plagiocephaly, the ear on the flattened side can be pushed slightly forward. From the side, you may notice a flatter area at the back of the head, one side looking less rounded, or the forehead on one side appearing slightly more prominent.
To describe how pronounced these signs are, clinicians often use the Argenta scale, which divides plagiocephaly into five types of increasing severity. It is a helpful way to observe the head closely and not miss any signs:
Type 1: flattening only, either on the side or at the back of the head.
Type 2: the flattening plus a shift in ear position, with one ear pushed forward.
Type 3: adds a bossing, or bulging, of the forehead on the same side as the flattening.
Type 4: from this type onward, the asymmetry becomes visible in the face. One eye may look larger than the other, one eyebrow may sit a little higher, and the line of the mouth may no longer run straight through the middle.
Type 5: in addition to all of the above, seen from the top there is bossing above the ears.
You can see how the ear position shifts across types 2 to 5 in the image below.
What parents notice about the face and ears
In some babies, flattening can be linked with one ear sitting slightly forward, small differences in cheek or forehead shape, or facial features that look less symmetrical.
Flat head or normal variation: when to worry
It can be hard to know what is normal and what is not. These questions can help guide your thinking:
☐ Does the shape look different from one side to the other?
☐ Is the flattening becoming more noticeable over time?
☐ Does the head look uneven from above?
☐ Do others also see that the head is uneven?
☐ Does repositioning seem to help or stay the same?
If you're answering yes to a few of these, it's worth taking a closer look. The self-check below takes under a minute.
Why it is hard to judge head shape by looking alone
It can be hard to judge and you don't want to be over-reactive. The questions above can help guide your thinking. Why is it difficult to see how severe the flattening is?
☐ Some babies have a lot of hair. Dampening can help to see the shape better
☐ All baby heads have ridges and indentations. That is normal, but also confusing.
☐ The posterior fontanel creates a small indentation just below the crown. This is also normal.
☐ Even professionals who see many babies with a flat head have difficulty determining its severity.
☐ Healthcare professionals therefore often use the Skully Care app to see how serious it is.
How a scan helps clarify what you are seeing
A scan helps turn what you see into clear, objective information. It can measure head shape accurately, show whether flattening is mild, moderate, or more pronounced, and track changes over time.
Common questions about what a flat head looks like
What does flat head syndrome look like in a baby?
It looks like an area of the head that is flatter than the rest, usually at the back or on one side, often making the head look uneven or asymmetrical from above. It can come with one ear sitting slightly forward or mild facial asymmetry.
What does a mild flat head look like?
Mild flattening is subtle: a slightly less rounded area at the back or one side, only really visible from above or when the hair is wet. It's often hard to distinguish from normal variation, which is why measuring helps.
Is a flat head dangerous?
In most cases a flat head is not harmful and does not affect brain development. It is mainly a shape difference.
Will a flat head correct itself?
Some mild and moderate cases improve over time, while others need a little help, depending on age and severity. You can read more in our guide on why babies get flat heads.
How do I know if it's normal or a real flat spot?
Use the questions above as a first check, then confirm with an objective measurement. The eye is unreliable even for professionals, so a scan is the most certain way to tell.
When is it too late to act?
Head shape changes are most responsive earlier in infancy, which is why early measurement can be helpful. Once a baby is 1 year old, their head can still improve somewhat on its own. However, it's good to know that from the age of 12 months, repositioning, or a helmet no longer add any value. For a detailed overview, read our guide on when it is too late to fix a flat head.
Writen by Elly van der Grift
Elly van der Grift is the co-founder of Skully Care and a pediatric physiotherapist with over 30 years of experience. Her mission is to provide top care for babies with skull deformities. With her infectious enthusiasm, she shares simple, effective tips that can make a big difference for your baby. Working with Elly, you'll feel confident and supported in your baby’s journey to better health.