Wry neck, known medically as torticollis, happens when muscles on one side of the neck spasm and force the head into a tilted or rotated position. The most common cause in adults is sleeping in an awkward position or making a sudden, vigorous movement that irritates the cervical ligaments or triggers a protective muscle spasm. Most cases resolve within 7 to 10 days, but wry neck can also signal something more serious depending on how it starts and what other symptoms come with it.
How Neck Muscles Lock Up
The key muscle involved is the sternocleidomastoid, a thick band that runs from just behind the ear down to the collarbone and breastbone. Spasms in this muscle, along with the trapezius and smaller surrounding muscles, pull the head to one side. The spasm is usually stronger on one side than the other, which is what creates the characteristic tilt or twist.
The locked position can take several forms. Your head might tip sideways with your ear drawn toward your shoulder, or it might rotate along its axis so your chin points to one side. Less commonly, spasms in the front or back of the neck push the head into a forward-flexed or hyperextended position. In all cases, the underlying issue is the same: muscles on one side go into sustained contraction and refuse to relax.
The Most Common Triggers in Adults
Acute wry neck in otherwise healthy adults usually comes down to one of a few triggers:
- Sleeping in an awkward position. This is the classic scenario. You wake up and simply cannot turn your head. The neck was held in an unusual angle long enough for the muscles or small joints to become irritated.
- Sudden or vigorous neck movement. A quick turn, an unexpected jolt, or a forceful stretch can spasm the muscles or irritate the cervical ligaments.
- Minor injury or strain. Anything from a car accident to a rough sports collision can trigger protective muscle guarding, where the neck muscles clamp down to prevent further damage.
- Viral infection. A cold or upper respiratory infection can cause enough inflammation near the neck to irritate the surrounding muscles and ligaments.
Two specific structural problems in the spine also cause wry neck. Slipped facet joints, the small paired joints along the sides of the vertebrae, can lock in an abnormal position and restrict movement. A herniated disc in the cervical spine can press on a nerve and trigger muscle spasm as a reflex response.
Infections That Cause Wry Neck
Bacterial and viral infections in the throat or upper airway can lead to a condition called Grisel syndrome, which is more common in children but can occur in adults. Infection near the throat spreads inflammatory material through blood vessels that run close to the top two vertebrae of the spine. The resulting inflammation weakens the ligaments holding those vertebrae together, allowing them to shift out of alignment. This creates a sudden, painful head tilt that differs from a simple muscle spasm because it involves actual instability in the joint between the skull and spine.
Grisel syndrome typically follows a throat infection, tonsillitis, or an ear infection. It requires medical attention because the instability, if left unchecked, can put pressure on the spinal cord.
Medication Reactions
Certain medications can cause wry neck as part of a dystonic reaction, an involuntary and often alarming muscle contraction. Anti-nausea drugs like metoclopramide, antipsychotic medications, and some anti-seizure drugs are the most common culprits. These drugs affect dopamine signaling in the brain, and the resulting imbalance can trigger acute spasms in the neck, jaw, and eye muscles. The reaction can happen within hours of taking a dose, and it often comes with additional symptoms like a clenched jaw, difficulty speaking, or the eyes rolling upward. This type of wry neck typically resolves quickly once the triggering medication is stopped or counteracted.
Wry Neck in Newborns
Congenital muscular torticollis is the most common form of wry neck in infants. It is thought to result from the baby’s positioning in the womb. If the head is held in one position for a prolonged period during pregnancy, the sternocleidomastoid muscle on one side gets compressed or overstretched. This damages the muscle fibers, and scar tissue forms as the muscle heals. The scarred muscle is shorter and tighter than the one on the opposite side, pulling the baby’s head into a tilt.
Difficult births, especially breech deliveries, can also strain the muscle during delivery. Parents typically notice the head tilt within the first few weeks of life, sometimes along with a small, firm lump in the neck muscle where the scar tissue has formed. Physical therapy is the standard treatment, and the goal is restoring range of motion so the neck can move within about 5 degrees of normal on both sides.
Symptoms That Suggest Something More Serious
A straightforward wry neck is painful but not dangerous, and symptoms typically clear up completely in 7 to 10 days. If pain persists beyond that window, it’s worth getting evaluated. Certain accompanying symptoms point to causes that need prompt attention:
- Fever, severe headache, and stiff neck together can indicate bacterial meningitis, an infection of the membranes surrounding the brain and spinal cord.
- Pain radiating down one arm with numbness, tingling, or weakness suggests a herniated disc pressing on a nerve.
- Loss of bowel or bladder control may indicate pressure on the spinal cord itself.
- Extreme instability, where the head can suddenly tilt much farther forward or backward than normal, could mean a fracture or torn ligaments.
- Persistently swollen glands in the neck may point to an infection or, less commonly, a tumor.
What Happens During Recovery
For the typical case triggered by sleeping wrong or a minor strain, the first 24 to 48 hours tend to be the worst. The muscles are in full spasm, and turning the head in any direction feels restricted and painful. Gentle heat, over-the-counter pain relief, and careful movement through whatever range feels tolerable generally help more than complete immobilization. Keeping the neck completely still can actually prolong stiffness.
By the end of the first week, most people notice a significant improvement in range of motion. Full recovery to normal, pain-free movement usually happens within 7 to 10 days. If the underlying cause is structural, like a herniated disc or joint instability, recovery takes longer and may require imaging, physical therapy, or other intervention depending on what the evaluation reveals.