Overview

Acute wry neck — sometimes called a locked neck or torticollis — is a sudden, painful neck spasm that leaves the head tilted and turned to one side, with difficulty moving it back. It usually comes on in the morning or after an awkward movement, with no clear injury.

In an otherwise well person without trauma or neurological symptoms, the common acute pattern is usually self-limiting and often settles within days. Similar head postures can occasionally have other causes, so the surrounding symptoms matter.

Typical Pattern

Sudden onset, often on waking or after a quick head movement
Sharp pain on one side of the neck with strong muscle spasm
The head is held tilted to one side and rotated to the other
Attempting to turn the head produces pain and spasm
Usually little or no arm pain, numbness or weakness

Why It Develops

The exact cause is often unclear. Common triggers include sleeping in an awkward position, a sudden turn of the head, prolonged static posture, or minor muscle overload. The neck muscles tighten protectively around the cervical joints, and that spasm is what keeps the head fixed.

The word "torticollis" covers many conditions, including rare serious ones, but the common acute form seen in otherwise healthy people is a self-limited episode. Serious causes are suspected when there is fever, neurological symptoms, or a history of head or neck injury.

How It Is Diagnosed

Assessment is mainly clinical: the onset, head position, movement pattern and a neurological check. Imaging is not routinely required when the presentation is uncomplicated, but may be considered after trauma, with concerning symptoms or when the course is atypical.

A clinician looks for concerning features — fever, numbness or weakness, unsteadiness, or torticollis that persists beyond a few weeks — that would change the plan.

Treatment

Reassurance: this is painful but normally short-lived
Gentle heat and simple pain relief (guided by a pharmacist or clinician) for the first day or two
Start gentle, comfortable movement as soon as possible — small range-of-motion exercises, avoiding forceful stretching
Avoid prolonged rest, collars and forceful "cracking" of the neck
Return to usual activities gradually

Physiotherapy is rarely needed for the acute episode itself, but can help if recovery stalls or the neck stays irritable.

When to Get Assessed

See a clinician if the neck stays locked beyond a few days, the pain is worsening, or it keeps recurring.

Seek urgent care if the twisted neck comes with fever and a stiff neck, headache, new numbness or weakness in the arms or legs, difficulty walking, or follows a fall or head injury.

References

StatPearls. "Torticollis." https://pubmed.ncbi.nlm.nih.gov/30969679/
NHS. "Neck pain." https://www.nhs.uk/conditions/neck-pain/

This information is for education only and is not a medical diagnosis. InjuryAtlas does not replace an assessment by a qualified health professional. If you have severe pain, visible deformity, numbness, loss of function, or symptoms that are getting worse, seek medical care promptly.

Acute Wry Neck (Locked Neck)