A term 4-month-old infant with positional plagiocephaly; after repositioning efforts, head shape worsens; recommended next step?

A term 4-month-old infant with positional plagiocephaly; after repositioning efforts, head shape worsens; recommended next step?

• A. Allow the infant to sleep on the tummy when the parents are in the room.
• B. Lay the infant in the "back to sleep" position, alternating the left and right occiput.
• C. Refer for orthotic cranial molding helmet therapy.
• D. Order a head CT to evaluate the infant for craniosynostosis.

Answer: (C)

Persistent positional plagiocephaly that worsens despite repositioning is best managed with orthotic cranial molding helmet therapy. At around this age, the infant’s skull is still growing rapidly, and a custom-fitted helmet can gently redirect skull growth to correct asymmetry over several months. This non-surgical option is appropriate after conservative measures have failed or the deformity progresses, aiming to improve head shape while the infant continues to develop. Allowing tummy sleeping, even with supervision, is not recommended due to sudden infant death syndrome risk, and continuing to rely only on repositioning is less effective once the deformity has worsened. Imaging with a head CT is not routinely needed unless there are clinical signs suggesting craniosynostosis (such as abnormal suture fusion on exam), which would change management.

Persistent positional plagiocephaly that worsens despite repositioning is best managed with orthotic cranial molding helmet therapy. At around this age, the infant’s skull is still growing rapidly, and a custom-fitted helmet can gently redirect skull growth to correct asymmetry over several months. This non-surgical option is appropriate after conservative measures have failed or the deformity progresses, aiming to improve head shape while the infant continues to develop.

Allowing tummy sleeping, even with supervision, is not recommended due to sudden infant death syndrome risk, and continuing to rely only on repositioning is less effective once the deformity has worsened. Imaging with a head CT is not routinely needed unless there are clinical signs suggesting craniosynostosis (such as abnormal suture fusion on exam), which would change management.