Can Torticollis Cause Head Flattening in Babies?

A baby who consistently looks in one direction can develop a noticeable flat patch surprisingly quickly. So, can torticollis cause head flattening? Yes. Torticollis is one of the most common reasons babies develop positional head flattening, because it makes it difficult or uncomfortable for them to turn their head freely.

The reassuring news is that early support can make a meaningful difference. Understanding what you are seeing, why it is happening and when to seek professional advice puts you in a far stronger position to protect your baby’s developing head shape.

Can Torticollis Cause Head Flattening?

Torticollis, sometimes called wry neck, describes a tightening or shortening of a neck muscle. In babies, it often affects the sternocleidomastoid muscle, which runs from behind the ear to the collarbone. This can leave a baby preferring to look to one side, with their chin slightly turned towards one shoulder and their head tilted towards the other.

When a baby rests with pressure on the same area of their skull night after night, or during long periods in a car seat, bouncer or pram, that area can gradually flatten. Their skull bones are soft and still growing rapidly during the first months of life. They are designed to accommodate brain growth, but this also means they are more easily shaped by repeated external pressure.

The resulting flattening is usually positional plagiocephaly, where one side of the back of the head is flatter, sometimes with an ear appearing slightly forward on that side. If a baby spends much of their time looking straight up with limited head movement, flattening may occur more evenly across the back of the head, known as brachycephaly.

Torticollis does not guarantee that head flattening will develop. Some babies have a mild preference and retain a rounded head shape. Equally, a baby can develop a flat spot without torticollis if they favour one position. But when a strong preference is present, the risk is higher because the pressure is so consistent.

Why the Link Is So Easy to Miss

Many parents first notice the head shape rather than the neck restriction. A baby may seem content looking towards the window, a favourite toy, a parent’s usual position by the cot or the more interesting side of the room. It can look like a harmless preference.

The difference with torticollis is that your baby may not simply prefer that side – they may be finding the other direction physically harder to reach. You might notice resistance when gently encouraging them to turn, or see that they can turn one way much farther than the other.

There are several reasons torticollis can develop. It may relate to positioning in the womb, a difficult birth, limited space in a multiple pregnancy or simply a baby’s early positioning habits. It is not a sign that you have done anything wrong. Babies are still developing strength, coordination and head control, and small imbalances can become more pronounced if they are not addressed early.

Signs Your Baby May Have Torticollis

A consistent head-turning preference is worth mentioning to your health visitor, GP or paediatric clinician, particularly if it has lasted more than a few days. You know your baby’s usual movements best.

Look out for a head that is regularly tilted to one side, difficulty turning fully in one direction, or fussing when you try to guide their gaze the other way. During feeding, a baby may settle much more easily on one breast or when held on one side. You may also spot flattening at the back or side of the head, facial asymmetry, or a tendency for their body to curve in the same direction.

A clinician can assess whether the issue is muscular torticollis or whether another cause needs to be considered. This matters because treatment should fit the baby, not simply the visible flat spot. A paediatric physiotherapist may give you safe, specific stretches and positioning guidance based on your baby’s range of movement.

What Helps at Home

Professional assessment is the right starting point if you suspect torticollis. Alongside any exercises you are shown, everyday positioning changes can reduce repeated pressure and encourage your baby to use both sides of their body.

During awake, supervised time, place interesting faces, toys and sounds on the side your baby tends to avoid. Rather than forcing their head into position, make the less favoured side rewarding and natural. Alternate which end of the cot you place their head at, as babies often turn towards light, voices or activity in the room.

Tummy time is particularly valuable because it takes pressure off the back of the head while building the neck, shoulder and trunk strength needed for more balanced movement. Begin with short, frequent periods from birth, and build up gradually as your baby tolerates it. Chest-to-chest tummy time counts too, especially for babies who initially dislike the floor.

Try varying how you hold and feed your baby so they have opportunities to look both ways. Reducing time spent in equipment that holds them on their back, when it is not needed for travel or safety, can also help. The goal is not to keep your baby off their back altogether. It is to create more movement and variety while they are awake.

For sleep, always follow safer sleep guidance: put your baby on their back in their own clear, firm, flat sleep space. Do not use pillows, wedges, sleep positioners or rolled towels to hold their head in place. Never place a baby to sleep on their side or front to try to correct head shape.

Treating the Cause and Supporting Head Shape

If torticollis is contributing to flattening, it is essential to address both issues. Neck treatment helps your baby gain the ability to turn and rest in different directions. Head-shape support reduces the prolonged pressure that has led to flattening in the first place.

How quickly improvement happens depends on your baby’s age, the severity of the movement restriction, how established the flattening is and how consistently the plan is followed. Younger babies often respond very well because their skulls are still growing rapidly. That is why acting when you first spot a preference, rather than waiting for a routine check, can be so helpful.

A specialist mattress may be considered as part of a carefully chosen plan for families concerned about positional head flattening. SleepCurve was developed by a UK Paediatric Cranial Osteopath and is clinically proven at Alder Hey Children’s Hospital to improve infant head shape, with an average 97% improvement over six months. It is designed to provide gentle, practical head-shape support during everyday infant sleep, but it does not replace assessment or treatment for torticollis itself.

For some babies, physiotherapy and repositioning are enough. For others, particularly where flattening is more noticeable or movement remains limited, a clinician may recommend additional support. Helmet therapy is sometimes discussed for severe cases, but it is not automatically necessary and should not be treated as the first answer when early, conservative intervention has not been fully explored.

When to Seek Advice Promptly

Arrange a clinical review if your baby cannot turn their head normally, their preference is becoming stronger, or you can see a developing flat area. Seek advice promptly if the head shape seems unusual from birth, there is a hard lump in the neck, your baby appears in pain, their movements seem reduced, or you have concerns about their vision, feeding or development.

Do not rely on photographs alone to judge progress. Photos can be useful when taken from the same angle and in the same light, but a trained professional can assess head shape, symmetry and neck movement more accurately. Regular checks also help you see whether the steps you are taking are truly changing the pattern.

Your baby does not need perfection to be doing well. What matters is noticing a persistent preference, getting the right guidance and giving their growing body more opportunity to move freely. A small concern raised early can lead to gentle, effective support – and greater peace of mind as your little one grows.