Head Shape
Comprehensive guide to positional plagiocephaly—causes, signs, diagnosis, repositioning, torticollis care, and cranial helmet therapy at CranioWell Orthotics & Prosthetics Centers.
Infant head shape differences are a frequent concern for parents. The most common pattern is plagiocephaly—one side of the skull flatter or more compressed than the other. It can raise cosmetic concerns and, less often, developmental follow-up needs. With early recognition and appropriate care, positional plagiocephaly can often be improved. This guide covers what families need to know, with CranioWell’s clinical approach to evaluation and cranial orthosis care.
Plagiocephaly comes from Greek roots meaning “oblique head.” It is often called flat head syndrome in everyday language. After birth, skull bones remain flexible and not fully fused so the brain can grow. Prolonged pressure from one sleep position—or intrauterine constraint—can flatten one area and create asymmetry.
Plagiocephaly is generally grouped into two categories:
Multiple factors can contribute. Common ones include:
Plagiocephaly is often noticed in the first months of life. Typical findings include:
These signs are often mild and do not by themselves mean brain injury. A clinician should assess severity and whether treatment is needed.
Diagnosis is usually clinical. A pediatrician or specialist examines the skull, assesses asymmetry, and looks for contributing factors. When needed, 3D scanning provides precise measurements of severity and pattern. If craniosynostosis is suspected, X-ray or CT may be requested. Helmet planning and 3D scanning for CranioWell HKM Pro are performed at CranioWell Orthotics & Prosthetics Centers.
The goal is more symmetric cranial growth. Methods vary with severity and age.
For mild plagiocephaly, repositioning is often the first step:
When torticollis accompanies plagiocephaly, physiotherapy and neck stretching are important. Guided exercises help the baby move the head more freely and can reduce asymmetry.
For moderate to severe positional plagiocephaly, a custom cranial orthosis (helmet) is a widely used option. At CranioWell Orthotics & Prosthetics Centers, infants are evaluated and fitted with individualized solutions.
How helmet therapy works
The helmet gently guides growth: it limits expansion where the head is already prominent and allows flatter areas more room to fill in. Custom, lightweight, breathable orthoses are designed for each infant.
When to start
The preferred window is often about 4–9 months, when cranial growth is rapid. Treatment can also be considered at other ages when a clinician recommends it.
Our process typically includes:
| Feature | Helmet therapy (positional orthosis) |
|---|---|
| Usefulness | Often helpful for moderate to severe positional plagiocephaly. |
| Duration | Usually several months (about 4–9), worn 20–23 hours/day. |
| Comfort | Custom design supports comfort; an adaptation period is normal. |
| Surgery | Generally non-surgical for positional cases. |
| Cost | Higher than repositioning alone because of custom fabrication. |
| Side effects | Occasional skin irritation or sweating; regular cleaning helps. |
| Indications | Used for positional plagiocephaly, brachycephaly, and related patterns. |
