Newborn Head Molding: Shape Changes After Birth

What does the evidence say about newborn head molding?

1. Pressure during a head-first birth can make the newborn head look elongated. Flexible bones and gaps allow this change in shape. A striking difference in head size or an unusual persistent finding should not automatically be attributed to routine molding. 1
2. Sutures are the connections between skull bones, and fontanelles are the soft areas where several bones meet. These structures accommodate early brain growth. They are part of the examination, rather than areas parents should try to press into a preferred shape. 2
3. The newborn head examination checks molding, overlapping sutures, scalp swelling, and fontanelles. Different findings can look similar to a parent, so the clinician's assessment is more useful than matching a photograph online. 3
4. Early follow-up includes measuring head circumference alongside weight and length. The measurement and physical examination give context to the head's appearance and create a record for monitoring growth over time. 4
5. Blood collected beneath the scalp after birth can contribute to jaundice. This is different from the shape change of molding itself. Tell the pediatric clinician about increasing yellow color, poor feeding, or a change in alertness. 5

How should changes in newborn head shape be followed?

• At birth, ask the clinician to explain any molding or scalp swelling.
• At early follow-up, review head circumference and any change in appearance.
• Between visits, report new swelling or a baby who is feeding or behaving differently.

Questions to discuss with your care team