When you notice that your newborn baby’s head shape looks “different,” a wave of anxiety washes over you. Is the head flat on one side? Is the back flattened? Does it look asymmetrical from above? These questions trouble every parent’s mind, and the first question that usually comes to mind is: “Will surgery be necessary?”

The answer, in most cases, is no. However, in certain situations, early intervention is critically important. Being able to distinguish between these two situations is extremely important—both to relieve families from unnecessary worry and to ensure that cases truly requiring intervention are treated in a timely manner.

Why Do Head Shape Abnormalities Develop in Babies?

Unlike adults, a baby’s skull bones have not yet fused together. Thanks to the flexible connective tissue lines between the bones, called sutures, the skull can expand as the brain grows. This is a perfect mechanism designed by nature to support brain development.

There are two fundamental causes of head shape abnormalities:

Positional (Deformational) Causes: These are shape changes due to external factors such as a baby lying in the same position for extended periods, intrauterine pressure, or torticollis (tightness in the neck muscles). The most common type is positional plagiocephaly—the flattening of one side of the head.

Craniosynostosis: This is a structural problem that arises when the skull sutures close earlier than normal, and it can restrict brain development. This condition is rarer, occurring in approximately 1 in every 2,000–2,500 live births.

Positional Shape Abnormalities: Correctable Without Surgery

In the vast majority of babies, the cause of head shape abnormality is positional. In this case, the skull sutures are open and brain development is not restricted. In other words, the problem is at a cosmetic level and usually resolves with the following methods:

Position change: Regularly changing the baby’s sleeping orientation and applying supervised tummy time while awake is the most basic and most effective approach. Results are quite successful, especially when started within the first 4–6 months.

Physical therapy: If torticollis is present, neck exercises and a physical therapy program are applied.

Helmet (orthotic) therapy: In babies between 4–12 months with moderate to advanced asymmetry, cranial orthoses (helmets) prepared with special measurements can help the head grow symmetrically. Although helmet therapy is controversial, positive results have been reported in selected cases.

The majority of positional shape abnormalities resolve significantly on their own once the baby begins to sit up and move around.

Craniosynostosis: When Is Surgery Necessary?

Craniosynostosis is the premature closure of one or more skull sutures. This closure prevents the brain from growing in that direction, and the skull grows compensatorily in other directions. As a result, distinct and characteristic head shape abnormalities emerge:

• Sagittal synostosis → The head appears long and narrow (scaphocephaly)
• Coronal synostosis → The forehead appears flat on one side and protruding on the other
• Metopic synostosis → The forehead takes on a triangular shape (trigonocephaly)
• Lambdoid synostosis → The back of the head flattens on one side (the rarest type)

In craniosynostosis, surgery is necessary because:

First, the prematurely closed suture can mechanically restrict the healthy growth of the brain. Second, if left untreated, intracranial pressure can increase, and this can adversely affect vision, cognitive development, and neurological functions. Third, structural abnormalities such as facial and eye socket asymmetry can progress.

Surgical intervention is generally planned between 3–12 months of age. Because early surgery is performed during the period when the skull bones are more flexible, both less invasive techniques can be applied and the results are better.

Positional or Craniosynostosis? How Is It Distinguished?

This distinction can often be made by an experienced pediatric neurosurgeon through physical examination. However, some clues can also guide families:

Findings suggesting a positional abnormality: Flattening at the back of the head (especially on one side), forward shifting of the ear on the same side, slight forward protrusion of the forehead on the opposite side of the flattening, and partial correction of the shape when the baby changes position.

Findings suggesting craniosynostosis: A hard, palpable ridge along the suture line, distinct and unusual shaping of the head, premature closure of the fontanelle, and the shape failing to correct with position changes.

For a definitive diagnosis, physical examination is the first step. When necessary, cranial ultrasound, plain radiography (X-ray), or computed tomography (CT) with three-dimensional cranial reconstruction imaging is performed.

Types of Surgery

Two fundamental approaches are currently used in craniosynostosis surgery:

Endoscopic strip craniectomy: This is a minimally invasive technique generally applied to babies 3–6 months old. The prematurely closed suture is removed through small incisions, and the head is then reshaped with helmet therapy. Its most important advantages are less blood loss, a shorter hospital stay, and faster recovery.

Open cranial reconstruction (cranial vault remodeling): This is preferred in older babies or in complex multiple-suture synostoses. The skull bones are reshaped and fixed in the appropriate position.

Both methods have their own specific indications. The choice of surgical method is determined individually according to the baby’s age and the type and extent of the synostosis.

Recommendations for Families

Don’t panic. Head shape abnormalities in babies are quite common, and the vast majority are positional. But don’t ignore them either.

Early evaluation is critical. Consulting a pediatric neurosurgeon within the first 3–4 months both eliminates unnecessary worry and, if craniosynostosis is present, provides the opportunity to intervene at the most appropriate time.

Don’t say “it will fix itself as the baby grows.” Positional abnormalities usually resolve, but craniosynostosis does not resolve on its own. Waiting without making this distinction can cause the treatment window to narrow.

Get information from reliable sources. Experiences on internet forums can be guiding, but every baby’s situation is different. Always make your decisions together with a physician who is an expert on the subject.

Conclusion

Not every head shape abnormality requires surgery—in fact, the vast majority do not. However, in conditions due to structural causes such as craniosynostosis, early surgical intervention makes a great difference for both the baby’s healthy brain development and normal head shape. What matters is having the right evaluation done at the right time.

If you have any concerns about your baby’s head shape, I recommend consulting a pediatric neurosurgeon without losing time. To get more information, you can contact us via WhatsApp.

Stay healthy.

Prof. Dr. Mehmet Şenoğlu

This article is for informational purposes and does not replace medical diagnosis or treatment. Always make decisions regarding your baby together with your physician.