How long does it take for a baby's head to form? Will a baby's flattened, elongated, and misshapen head straighten itself?
When parents notice a deformed baby's head, concern naturally arises. A flattened, elongated head in an infant or other skull deformities raise many questions and concerns about the baby's future development and appearance. In this article, we explain the normal shape of a baby's head, how long it takes for a baby's head to develop, and whether plagiocephaly corrects itself or requires specialist intervention.
How long does it take for a baby's head to develop and what does the correct shape of a baby's head look like?
The development of an infant's skull is a process that depends largely on the dynamic growth of the brain. after birth its volume is approximately 40% of the volume of the adult brain, and by the age of three, the baby has reached as much as 80% this volume. This intense brain expansion is the main driving force behind the growth of the skull bones and the formation of the head.
In newborns, the skull bones are connected by flexible sutures and fontanelles. This allows the head's shape to vary slightly, which is natural, especially in the first few months of life.
This period is crucial for answering the question of how long a baby's head takes to form, as it is during this time that the bones are most susceptible to external pressures. What does the normal shape of a baby's head look like? The correct shape of a baby's head is usually round and symmetricalIf after birth we notice a slight irregular shape, this is often due to pressure in the mother's womb or forces acting on the head during vaginal delivery.
Correct shape of a baby's head. Image source: https://www.aafp.org/pubs/afp/issues/2004/0615/p2863.html
How long does it take for the head to develop if it is deformed after birth?
Deformed head in an infant after giving birth, usually it balances out on its own within the first few months (usually to about 3 months), reaching correct shapeIn babies born prematurely, the skull bones are even more susceptible to deformation due to immaturity.
You already know how long it takes for the baby's head to form, but persistent or worsening head deformities may require consultation with a specialist as soon as possible - do not delay. It is best to start therapy before the baby is 9 weeks old..
Early intervention is crucial due to the plasticity of the skull in the first months after birth.
Basic types of flattened head in infants
Head deformities in infants are a common phenomenon known as nonmyasynostotic head deformities (NHD)They may have a character symmetrical and/ or asymmetricBelow are the most common types. flattening of the head in infants:
🔹 Plagiocephaly – an asymmetrical, flattened head in an infant
Plagiocephaly is a unilateral flattening of the back of the head (occiput). Typically, if the back of the head is flattened on one side, the same side of the forehead may be convex, and the ear on the flattened side may appear protruding forward. In severe cases, this can lead to facial, neck, or jaw asymmetry. It is important to distinguish positional plagiocephaly from craniosynostosis, which is the premature fusion of the cranial sutures, which requires surgical intervention.
🔹 Brachycephaly – a wide and flattened head
Brachycephaly is a symmetrical flattening of the occiput. This causes the baby's head to appear "truncated at the back" and wider than usual. It is another form of infant head deformity that often occurs in large newborns or children with limited motor activity.
Image source: Santiago GS, Santiago CN, Chwa ES, Purnell CA. Positional plagiocephaly and craniosynostosis. Pediatrician Ann. 2023;52(1):e10-e17. doi:10.3928/19382359-20221114-03, https://jamanetwork.com/journals/jama/fullarticle/2817462
🔹 An elongated head in an infant, i.e. dolichocephaly
Elongated head in an infant is characterized by the fact that the front and back of the head are elongated, and its two sides are flattened. This symmetrical, elongated head shape It is particularly common in premature babies. It may be caused by prolonged lying in one position, for example due to the use of respiratory support or the fetal position.
What causes a flattened head in babies? Learn the most common causes.
The development of a baby's deformed head may be influenced by:
- Limited neck mobility (torticollis):
A child with torticollis has difficulty turning their head to one side, which causes constant pressure on the same area of the back of the head.
- Abnormal positioning in the womb or pressure during childbirth.
- Prematurity:
Premature babies have softer skull bones and often spend long periods in one position, e.g. due to respiratory support, which increases the risk of deformities, including elongated head in an infant.
- Too long and regular use of a car seat or bouncer:
These devices are practical (and in the case of a car seat, also necessary), but they keep the child in one position, limiting the possibility of free movement, which contributes to head deformations.
- Delay in achieving motor milestones:
Babies who later begin to roll over on their own or sit unsupported spend more time in the supine position, which increases the risk flattening of the head.
Similarly, in the case of children who, due to hip dysplasia, must be fitted with a Tubinger splint, which significantly affects the child's movement capabilities.
Will the baby's head straighten out? Treatment of head deformities in infants
Many parents ask themselves: Will the baby's head straighten out or will the plagiocephaly even out? The answer is often: so, especially in mild cases and with early therapeutic intervention, the baby's head has a chance to return to correct shape.
Expert advises
How long does a child's head take to develop? A child's head is most flexible in the first 12 months of life, and this is when deformation most often occurs. At the same time, it is during this time that the greatest therapeutic effects can be achieved. Later, the sutures, or connections between the skull bones, gradually heal, until the skull reaches its final shape around age 6.
Will the baby's head even out? How to fix a flat head in a baby
🔹 Physiotherapy and osteopathy:
Early diagnosis of the cause of the occurrence deformation of the baby's head helps achieve faster and more visible therapy results
🔹 Repositioning and tummy time – the first line of defense for head deformities:
The easiest way to prevent and treat mild flat head conditions is repositioning (frequent change of the baby's position), including regularly placing the baby on the tummy timeSuch parental actions at home should always be accompanied by specialized therapy.
🔹 Choosing the right firm mattress for your crib:
It's important for your baby to have complete freedom to turn their head from side to side while lying on their back while sleeping. A mattress that's too soft and sagging can make this movement challenging, especially for newborns and small infants.
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acting Head of the Medical Rehabilitation Department, Physiotherapy Specialist and Special Educator, Institute of Mother and Child
🔹 Limiting time in car seats and bouncers:
Avoid regular, long naps in the car seat or routinely using the car seat as a substitute for a stroller carrycot. Czy flattened the baby's head will straighten out, if the baby will spend long hours every day in a bouncer or rocker? Certainly, a long-term, forced body position, e.g. in a rocker, is not conducive to the proper development of the head, so we should limit the time the child spends in such devices to a minimum.
Will plagiocephaly correct itself after physiotherapy?
Expert advises
In case of head deformities in infants, diagnostic visit to a physiotherapist/osteopath and further therapy is usually a necessary element in the process of proper development of the baby's head. The therapist will suggest different ways of carrying the baby and advise on how to play with the baby – the most important thing here is the variety of movement experiences offered to the child, frequent changes of position, and all this is based on the parent's intuition. Osteopathic treatment is also very effective. Early intervention is key, because it allows the problem to be corrected before the connections between the skull bones become less malleable. This helps children avoid long-term complications such as difficulty breastfeeding, vision problems, bite problems, and facial asymmetries.
Specialized helmet for head deformities in infants – when is it recommended?
When friendly home care and regular physiotherapy don't help, parents wonder, will the baby's head straighten out?? In such situations, the solution is corrective helmet, which is mainly used for moderate and more severe distortions.
Helmets are made individually to order Based on detailed research, made of lightweight and rigid materials, with a foam lining inside. Their function is to properly mold the head during its natural growth, restoring its optimal shape.
Will plagiocephaly, or head deformity, correct itself after using a helmet?
Therapy is the most effectivewhen it is started between 4 and 12 months of age, because that's when brain development is the fastest. A helmet is normally worn almost around the clock (with a 1-hour break, e.g. for a bath), also during sleep.
After 12–18 months of age, the effectiveness of this method decreases as the skull bones gradually harden and become less malleable.
Surgical treatment – rare, but necessary in some cases of head deformities
Surgical treatment in case of positional plagiocephaly jest very rare and recommended only in extremely severe cases that are resistant to other methods, including when the cause of head deformation turns out to be the cause craniosynostosisThis congenital condition is associated with premature fusion of the cranial sutures. Untreated, craniosynostosis can lead to stunted brain growth and increased intracranial pressure. In such cases, surgical intervention is almost always necessary.
The optimal time for surgery for craniosynostosis is usually between 3 and 9 months of an infant's life.
Summary: Baby's Head Deformation - How Long Does It Take to Form and Why Early Intervention Is Key
Although a flattened, elongated head in an infant or other types of deformities may raise concerns, It is crucial to notice the problem early and take actionwhich increase the chances that a baby's deformed head will gradually regain symmetry. How long does a baby's head take to form? This is determined by the rapid growth of the brain, therefore it is best to react in the first 3-4 months of life.
With appropriate methods, you can restore the correct shape of your baby's head and ensure its harmonious development.
Bibliography (access to internet sources as of 05.09.2025/XNUMX/XNUMX):
- Captier, G., Dessauge, D., Picot, M. C., Bigorre, M., Gossard, C., El Ammar, J., & Leboucq, N. (2011). Classification and pathogenic models of unintentional postural cranial deformities in infants: plagiocephalies and brachycephalies. Journal of Craniofacial Surgery, 22(1), 33-41. DOI: 10.1097/SCS.0b013e3181f6c386
- Collazo, G. R., & Angulo, M. I. (2024). Flat Head Syndrome in Infants. JAMA, 331(17), 1512. DOI: 10.1001/jama.2023.26048
- DeGrazia, M., Giambanco, D., Hamn, G., Ditzel, A., Tucker, L., & Gauvreau, K. (2015). Prevention of deformational plagiocephaly in hospitalized infants using a new orthotic device. Journal of Obstetric, Gynecologic & Neonatal Nursing, 44(1), 28-41. DOI: 10.1111/1552-6909.12523
- Di Chiara, A., La Rosa, E., Ramieri, V., Vellone, V., & Cascone, P. (2019). Treatment of Deformational Plagiocephaly With Physiotherapy. Journal of Craniofacial Surgery, 30(7), 2008-2013. DOI: 10.1097/SCS.0000000000005665
- Ellwood, J., Draper-Rodi, J., & Carnes, D. (2020). The effectiveness and safety of conservative interventions for positional plagiocephaly and congenital muscular torticollis: a synthesis of systematic reviews and guidance. Chiropractic & Manual Therapies, 28(1), 31. DOI: 10.1186/s12998-020-00321-w
- Kuo, A. A., Tritasavit, S., & Graham, J. M. Jr. (2014). Congenital muscular torticollis and positional plagiocephaly. Pediatrics in Review, 35(2), 79–87; quiz 87. DOI: 10.1542/pir.35-2-79
- Laughlin, J., Luerssen, T. G., Dias, M. S., & Committee on Practice and Ambulatory Medicine, Section on Neurological Surgery. (2011). Prevention and Management of Positional Skull Deformities in Infants. Pediatrics, 128(6), 1236-1241. DOI: 10.1542 / peds.2011-2220
- McGarry, A., Dixon, M. T., Greig, R. J., Hamilton, D. R. L., Sexton, S., & Smart, H. (2008). Head shape measurement standards and cranial orthoses in the treatment of infants with deformational plagiocephaly. Developmental Medicine & Child Neurology, 50(8), 568-576. DOI: 10.1111/j.1469-8749.2008.03017.x
- Panza, R., Piarulli, F., Rizzo, V., Schettini, F., Baldassarre, M. E., Di Lorenzo, A., … & Laforgia, N. (2024). Positional plagiocephaly: results of the osteopathic treatment of 424 infants. An observational retrospective cohort study. Italian Journal of Pediatrics, 50, 166. DOI: 10.1186/s13052-024-01729-3
- Pastor-Pons, I., Hidalgo-García, C., Lucha-López, M.O., Barrau-Lalmolda, M., Rodes-Pastor, I., Rodríguez-Fernández, Á. L., & Tricás-Moreno, J. M. (2021). Effectiveness of pediatric integrative manual therapy in cervical movement limitation in infants with positional plagiocephaly: a randomized controlled trial. Italian Journal of Pediatrics, 47(1), 41. DOI: 10.1186/s13052-021-00995-9
- Kalra, R., & Walker, M. L. (2012). Posterior plagiocephaly. Child's Nervous System, 28(9), 1389-1393. DOI: 10.1007/s00381-012-1784-y
- Santiago, G. S., Santiago, C. N., Chwa, E. S., & Purnell, C. A. (2023). Positional Plagiocephaly and Craniosynostosis. Pediatric Annals, 52(1), e10–e17. DOI: 10.3928/19382359-20221114-03
- Schweigert, A., Merrill, K., Mokhtarzadeh, A., & Harrison, A. (2019). Periocular Asymmetry in Infants with Deformational Posterior Plagiocephaly. Journal of Binocular Vision and Ocular Motility, 69(1), 18-23. DOI: 10.1080/2576117X.2019.1565275
- Williams, E., & Galea, M. (2023). Another look at "tummy time" for primary plagiocephaly prevention and motor development. Infant Behavior and Development, 71, 101839. DOI: 10.1016/j.infbeh.2023.101839
- Willis, S., Hsiao, R., Holland, R. A., Lee, K., & Pitetti, K. (2019). Measuring for nonsynostotic head deformities in preterm infants during NICU management: A pilot study. Early Human Development, 13156-62. DOI: 10.1016/j.earlhumdev.2019.03.002
- Kabbani, H., & Raghuveer, T. S. (2004). Craniosynostosis. American Family Physician, 69(12), 2863-2870. PMID: 15222651
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