Right torticollis is a condition where the head tilts to the right side while the chin rotates toward the left. It happens because the large neck muscle on the right side, called the sternocleidomastoid, is shortened or tightened. This is most commonly seen in newborns and young infants, where it’s known as congenital muscular torticollis, and it affects roughly 3 to 5 out of every 1,000 babies.
How Right Torticollis Looks
The hallmark of right torticollis is a consistent pattern: the baby’s right ear drops toward the right shoulder, and the face turns to look toward the left. This happens because the shortened muscle on the right side of the neck pulls the head into that position. You might notice your baby strongly prefers looking in one direction, or that they resist turning their head to the right.
Beyond the head tilt itself, there are a few other physical signs. In about one out of three cases, a small pea-sized lump can be felt in the tight neck muscle. This is sometimes called a “pseudotumor,” and despite the alarming name, it’s not cancerous. It’s simply a mass of thickened muscle tissue. Over time, if the head stays tilted in one direction, the skull and face can develop asymmetry, a condition called plagiocephaly, where one side of the head becomes flatter than the other. Some babies with torticollis also have hip dysplasia, so both hips are typically checked during evaluation.
What Causes It
Most cases trace back to one of two things: the baby’s position in the womb or an injury during delivery. When space in the uterus is tight, whether from low amniotic fluid, a breech position, or the pressure of the uterine walls, the baby’s neck muscle can be compressed and shortened. This is especially common in first pregnancies, where the uterus is less flexible. In a large study of infants with the condition, 76% were firstborns.
The second pathway involves trauma during birth itself. This happens more often in breech deliveries or when there’s a mismatch between the baby’s size and the birth canal. The muscle is stretched or torn, and as it heals, scar tissue forms and shortens it. Boys are slightly more likely to develop the condition (54% vs. 46% of cases in one study), possibly because they tend to have higher birth weights. Interestingly, right-sided torticollis is associated with lower average birth weight (about 3,274 grams) compared to left-sided cases (3,674 grams), and left-sided torticollis is more common after vaginal delivery.
Congenital vs. Acquired Torticollis
The congenital form, present from birth, is by far the most common in infants. But torticollis can also develop later in childhood or adulthood due to entirely different causes. Acquired torticollis can result from problems with the ligaments or bones in the neck, vision issues that cause a child to tilt their head to see better, infections that lead to inflammation near the upper spine, or neurological conditions. If a child who previously held their head straight suddenly develops a tilt, it’s a different situation from the infant form and points to an underlying problem that needs its own evaluation.
How It’s Treated
Physical therapy is the primary treatment, and it works well. Studies show that 90% to 95% of children recover before their first birthday when treatment is appropriate and started early. When therapy begins in the first three months of life, 41% of infants are fully recovered within just four to six weeks. If treatment starts before six months, the recovery rate climbs to 97%.
Therapy involves two main approaches. First, a physical therapist performs gentle passive stretches, slowly moving the baby’s head through its full range of motion to lengthen the tight muscle. Parents and caregivers learn these stretches to do at home between sessions. Second, the therapist uses age-appropriate play to encourage the baby to actively turn their head in the restricted direction, building strength and flexibility on their own. Positioning strategies at home also help. For right torticollis, this means placing toys, sounds, and visual stimulation to the baby’s right side so they’re motivated to turn that way.
Starting physical therapy early also reduces the risk of secondary problems like skull flattening, and it cuts down on the total number of therapy sessions needed.
When Surgery Is Considered
Surgery is reserved for the small percentage of cases that don’t respond to physical therapy. The procedure involves releasing or lengthening the tight neck muscle. Outcomes are best when surgery happens between ages 1 and 4. After age 5, the effectiveness decreases because the skull and facial bones may have already developed permanent asymmetry from years of abnormal positioning. Even so, surgery in older children can still improve both appearance and neck movement. In adults with untreated torticollis from childhood, surgery remains an option, though results are less predictable and the topic is still debated among specialists.
What Affects Recovery Time
The single biggest factor is how early treatment starts. Babies who begin therapy in the first few months of life have dramatically shorter treatment courses and higher success rates than those who start later. The severity of the muscle tightening also matters. Babies born via vaginal delivery tend to have greater thickening of the affected muscle (averaging about 6 mm of difference between sides, compared to 4 mm for those born by cesarean), which can mean a longer road to full range of motion. The presence of a pseudotumor in the muscle is another marker of a more involved case, though these still respond well to consistent therapy.