Baby always turns head to one side: torticollis

What does the evidence show for torticollis in babies?

• Congenital muscular torticollis affects an estimated 0.3% to 16.0% of newborns in European studies, or about 3 to 5 out of every 1,000 newborns; it is commonly identified at or soon after birth, with the characteristic muscle thickening becoming noticeable between the second and third weeks of age and reaching its largest size around three to four weeks. 1
• The head tilts toward the affected muscle's side while rotation is restricted toward the opposite direction, with a firm, spindle-shaped, painless lump felt along the neck muscle; the two recognized causes are a fetal position that leads to localized muscle crushing and reduced blood flow, or a perinatal injury during a difficult delivery that stretches the muscle and forms a small area of bleeding. 1
• Early identification and prompt care give infants with congenital muscular torticollis the best chance of complete resolution, and physical therapy started in the first few months of life is linked to a faster improvement in symptoms. 1
• Reported incidence for torticollis ranges from 0.3% to 3.9%, and head-shape asymmetries including flat-spot plagiocephaly have been reported alongside torticollis in more than 90% of cases. 2
• Physical therapy started before one month of age achieves complete resolution in 98% of cases within about 1.5 months of care, while starting physical therapy at six months of age or later can take up to 9.5 months; palpation, visual inspection of head position and shape, and checking the neck's range of motion are the recommended parts of the assessment. 2
• A palpable muscle mass is an important marker for starting intervention by the second month of life; parents often notice the tilted head themselves, and congenital torticollis is typically identified around two to three weeks of age. Ultrasound is the most common imaging test used in the newborn period, with MRI reserved for ruling out non-muscular causes. 3
• Holding the head up during tummy time is a named movement milestone by 2 months of age, and the general guidance for any missed milestone or parental concern about movement is to act early and talk with the child's doctor rather than wait. 4

When should I call my provider about torticollis in babies?

A neck lump that keeps growing rather than gradually shrinking, a head tilt that first appears well after the newborn period, or any sign beyond the neck itself, such as feeding or vision changes, points away from ordinary muscular torticollis and toward the longer list of other causes clinicians rule out, including vertebral anomalies and neurological or eye-related conditions. Bring any tilted head or one-sided neck stiffness to your baby's doctor rather than waiting, since starting physical therapy before one month of age is linked to complete resolution in about 98 percent of cases, compared with a course that can stretch to 9.5 months when it starts at six months or later. Ultrasound is the usual first imaging test if the exam isn't straightforward, with MRI reserved for ruling out a cause beyond the muscle itself. Whatever the pattern, any symptom that feels beyond your usual range is a reason to call: obstetric teams expect these questions and would rather hear early than late.