Acute stiff neck

What it is

Acute wry neck is a sudden painful restriction, usually appearing on waking or after a quick movement. The neck is held to one side, movement in one or two directions is sharply blocked, and it is often impossible to turn the head at all.

The likely mechanism is a small facet joint becoming irritated or a structure within it becoming trapped, with protective muscle spasm on top. It is a benign, self-limiting condition that resolves within days to a couple of weeks - the spasm produces most of what is felt, which is why it looks so much worse than it is.

What it feels like

• Waking with the neck locked, often held tilted to one side
• Sharp pain on trying to turn in one particular direction
• A hard block rather than a stretch, with movement stopping abruptly
• The whole body turning to look sideways
• Aching into the shoulder and upper back from the guarding

What causes it

Most people have more than one of these at once, and they feed each other. Read the list looking for the two or three that sound like your week rather than for the one true answer — the ones that describe you are the ones worth acting on.

Facet joint irritation

One of the small paired joints at the back of the neck becomes irritated or a fold of its lining becomes caught. The joint then refuses to move in one direction, which produces the characteristic asymmetric block.

Protective muscle spasm

The muscles around the joint lock on to protect it. Most of the pain and most of the visible deformity come from this rather than from the joint itself.

Sleeping position

The commonest trigger. Hours with the neck at an awkward angle, particularly on a pillow that is too high or too flat, or after falling asleep in a chair.

A sudden movement

Turning quickly to look behind, or a sudden reach. The movement is usually trivial and does not explain the severity, which is characteristic of a spasm-driven problem.

Cold or a draught

Frequently reported, and plausible: cold raises muscle tone and reduces blood flow in the superficial neck muscles.

An already stiff neck

Reduced baseline range means less margin. People with chronic neck stiffness get these episodes more often.

Stress and raised resting muscle tone

Higher baseline tone in the neck muscles makes a protective spasm more likely and more severe.

Being frightened by it

The dramatic appearance leads people to protect the neck rigidly, which prolongs the spasm. Understanding that it is benign and self-limiting genuinely speeds recovery.

In children, a different consideration

Acute torticollis in a child, particularly with fever, ear infection or after trauma, has other causes and should be assessed rather than assumed benign.

Who tends to get it

• Anyone with pre-existing neck stiffness or a history of neck pain
• People in a stressful period, with raised muscle tone
• Anyone sleeping on an unsuitable pillow or in an unusual position
• Desk workers with sustained forward-head postures
• People who have had a previous episode, which makes another more likely

What makes it worse, and what settles it

The qFIT routine for this

Ready-made routineNeck Relief & Range

qFIT already has this one built. It runs massage first, then stretching, then strength — the order that works on a body that is already sore — and every activity in it carries the reason it is there.

The button below opens your Checklist with this routine already selected, so instead of your whole list you land on just its Categories, Targets and Exercises, each with its checkbox, ready to tick as you work through them.

Have more than one problem? Tick yours under My Problems on My Profile and your Checklist's Routine list gains Recommended for my problems — every routine for the problems you picked, merged into one. Your picks stay private; that filter is the only thing they feed.

Get it checked if…

Wry neck after trauma, with fever, or with neurological signs needs assessment before any movement therapy

And whatever the body part: chest pain or unusual breathlessness on exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or one calf that is swollen, warm and painful. Any of those, stop and get assessed.

How it usually goes

Most episodes resolve substantially within two to seven days and completely within one to two weeks. Gentle early movement shortens it; rigid protection lengthens it. Recurrence is common in people with chronic neck stiffness, which makes ongoing neck strengthening and mobility worthwhile between episodes. A stiff neck with fever, severe headache, rash or light sensitivity, or one following significant trauma, needs urgent medical assessment rather than heat and movement.

Prevalence basis: Primary-care presentation data

Others the same routine covers

These share the Neck Relief & Range routine, so the work is the same. If one of them also sounds like you, that is a reason to expect more from it, not less.

This is general information, not a diagnosis, and it cannot examine you. If it matches you, use it to ask better questions of a clinician rather than to replace one.