Flat Head Syndrome Explained Simply for Parents

Noticing a flat spot on your baby’s head can be worrying, but it’s actually very common. Let’s break down what flat head syndrome is and what you can do to help.

What Is Flat Head Syndrome?

Flat head syndrome, sometimes called plagiocephaly, happens when a baby’s skull develops a flat spot, usually on the back or side of the head. Babies’ skulls are soft and flexible, which helps them grow quickly in the first year, but it also means that pressure on the same spot for long periods can cause flattening.

The reassuring news? It’s very common. Around 1 in 5 babies can have some degree of flattening, so don't fear, you're not alone!

Why It Happens

Flat spots usually develop because of:

• Positioning: Babies spend a lot of time on their backs, which is recommended for safe sleep. But lying in the same position too often can create pressure on the skull.

• Tight neck muscles: Some babies have a condition called torticollis, where one side of the neck is tighter, so they favour turning their head in one direction.

• Premature birth: Premature babies have softer skulls and may spend more time lying on their backs.

  
  

What’s Normal

Some flattening is perfectly normal, especially in the first few months. You might notice:

• A slightly flattened spot at the back of the head

• One ear sitting slightly forward compared to the other

• Your baby turning their head more to one side

  
  

For most babies, this improves naturally as they start sitting up, rolling, and crawling - basically regularly repositioning themselves, resulting in less pressure in the same spot on their heads.

When to Keep an Eye On It

It’s worth checking in with a professional if:

• The flattening seems severe or uneven

• One side of the head looks very different from the other

• Your baby has trouble turning their head or seems stiff on one side

• There are changes in facial symmetry (like uneven eyes or cheeks)

Simple Ways to Help at Home

The great news is, you can support your baby’s head shape with everyday activities:

• Tummy time: Gives neck, back, and shoulder muscles a workout while taking pressure off the back of the head.

• Change positions: Alternate the direction your baby sleeps in the cot/moses basket or the way you place them on a mat.

• Encourage looking around: Put toys or interesting objects on the side your baby doesn’t naturally turn to.

• Carry and cuddle: Holding your baby upright or over your shoulder gives them a nice break from lying on their back.

• Swap feeding sides: If breastfeeding, alternate the breast that baby feeds from to encourage equal neck rotation. If bottle feeding, switch the arm you hold your baby in so they turn their head both ways evenly.

  
  

Trust the Process

Most flat head syndrome improves naturally as babies grow and start moving more. Helmets or surgery are rarely needed (but can be easily arranged through the necessary referral channels when required). With a little guidance and plenty of movement, your baby’s head shape usually evens out beautifully. And as always, the earlier the intervention, the better the outcomes!

If you’d like personalised support, our Baby MOT service includes a full assessment of your baby’s posture, ranges of movement, gross motor function, neurology and head shape, with follow-ups to help encourage healthy development.