Positional plagiocephaly means asymmetric head shape — typically, flattening in one area. It is caused by pressure on the bones of the skull either before or after birth. The flattening may be obvious or barely noticeable.
Plagiocephaly isn't thought to be genetic. Possible causes include:
Positional plagiocephaly is diagnosed based on an examination by a health care provider experienced in craniofacial anomalies. In addition to the flattening, the baby's ear is usually displaced forward on the same side as the flatness in the back.
Sometimes, X-rays of the skull are needed to determine whether a baby has positional plagiocephaly or a condition called craniosynostosis, in which one or more bones of the skull close prematurely.
The first line of treatment is often to keep the baby off the flat part of the head as much as possible by repositioning the head during sleep, while still keeping the baby on his or her back. At night and during nap time, place a roll of fabric under the shoulder and hip of the flat side and attach it to your baby's bed clothes with pins or tape, so your baby can't roll away.
In addition, keep your baby off the flat area by:
Reviewed by health care specialists at UCSF Benioff Children's Hospital.
Last updated
September 27, 2011
Craniofacial Anomalies Center
513 Parnassus Avenue, S-747
San Francisco, CA 94143-0570
Phone: (415) 476-2271
Fax: (415) 476-9513
Appointment information