Flat Head Syndrome (Plagiocephaly) in Babies
Also known as: flat head syndrome, positional plagiocephaly, brachycephaly, scaphocephaly
A flat or uneven head shape in babies, usually from lying in one position. Common and very treatable, often without a helmet.
Plagiocephaly is a flattening or asymmetry of a baby's skull, most often from lying in one position. Brachycephaly is a wide, flat back of the head, and scaphocephaly is a long, narrow head shape. These are common in the first months of life and most are positional, which means they do not affect brain development.
Common signs
- One side of the back of the head is flatter than the other
- One ear or forehead sits further forward
- The back of the head is flat and wide
- Your baby always turns their head the same way
What helps
Many babies improve with repositioning, supervised tummy time and physiotherapy, especially if they have a tight neck (torticollis). A Starband cranial helmet is usually considered when the shape is moderate or severe, or has not improved. Starting earlier generally gives better results.
When to see a doctor
See your doctor if the head shape is getting worse, if there is a ridge along a skull seam, or if your baby's development worries you. A small number of babies have craniosynostosis, which needs a specialist.
Not sure whether a device will help? Book an assessment and we will tell you honestly.
How we can help
Common questions
No. The helmet is custom-made, padded and adjusted at follow-ups so it stays comfortable. It is designed to touch the head only where the shape needs guiding and to leave room where the head can grow into the flat areas.
Treatment is most effective earlier, but we are happy to assess older babies and advise honestly on what to expect.
This page is general information, not a diagnosis. If you have sudden, severe or worsening symptoms, see a doctor. Last updated 1 November 2026.
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Book an assessment at Eldomed Centre, Eldoraigne, or WhatsApp us on 061 902 0850. We will tell you honestly what is likely to help.