Whiplash

What it is

Whiplash is a rapid back-and-forth movement of the neck beyond its normal range, straining muscles, ligaments and joints. The acute injury is real, and the tissue involved heals on the ordinary timescale of soft tissue - a few weeks.

What makes whiplash distinctive is how often pain persists beyond that. Around a third of people have symptoms a year later, and the predictors of that outcome are mostly not physical: initial pain intensity, fear of movement, catastrophic thinking about the injury, and psychological distress predict chronicity far better than crash severity does.

What it feels like

• Neck pain and stiffness starting within hours to a day of the accident
• Headache, often at the base of the skull
• Pain into the shoulders and upper back
• Reduced neck movement in all directions
• Sometimes dizziness, poor concentration and disturbed sleep

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.

Rapid acceleration-deceleration of the neck

The head is thrown backward and forward faster than the neck muscles can react, straining muscles, ligaments and the small facet joints. The facet joints are the most commonly implicated pain source.

Protective muscle guarding

The neck muscles splint the area after the injury. That guarding produces much of the stiffness and it persists long after the tissue has healed unless movement is deliberately restored.

Fear of movement

One of the strongest predictors of chronic symptoms. Fear reduces movement, which produces stiffness and weakness, which produces pain that confirms the fear.

Deep neck flexor inhibition

The small stabilising muscles at the front of the neck switch off after whiplash and stay off. Their weakness is a consistent finding in people with persistent symptoms and it is directly trainable.

High initial pain intensity

The single best physical predictor of a poor outcome. It is a marker of how sensitised the system became rather than of how much tissue was damaged.

Psychological distress and catastrophising

Anxiety about the injury and its consequences predicts chronicity strongly. This is not a suggestion the pain is imaginary - it is a well-replicated finding about how pain systems behave.

Central sensitisation

In people with persistent symptoms, widespread sensitivity to pressure and cold develops - a sign the pain system has become amplified rather than the neck being more damaged.

Prolonged use of a collar

Immobilisation was standard treatment for decades and produces worse outcomes than early movement. Collars are now generally avoided for this reason.

Litigation and the compensation process

Associated with slower recovery in multiple studies, probably through the need to keep demonstrating symptoms and the stress of an unresolved process, rather than through deliberate exaggeration.

Who tends to get it

• Anyone involved in a rear-end collision, regardless of vehicle damage
• People with high pain intensity in the first days, which is the strongest predictor
• Anyone with pre-existing neck pain or a previous whiplash
• People with high anxiety or fear about the injury
• Those involved in a prolonged compensation process

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…

Severe midline tenderness, neurological signs, or altered consciousness after trauma - image before any exercise

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

Around half of people recover fully within three months and a substantial minority have symptoms at a year. The strongest influences on which group someone ends up in are early pain intensity, fear of movement and how the injury is explained - which makes early activity and reassurance genuinely therapeutic rather than merely kind. Arm weakness, numbness, severe headache, difficulty swallowing or any neurological symptom after a neck injury needs urgent assessment.

Prevalence basis: Injury surveillance

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.