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What happens in whiplash?
Sudden acceleration and deceleration move the head relative to the trunk. This can happen in a collision or another accident. Neck muscles and other tissues may be loaded beyond what they normally tolerate.
The word whiplash does not identify the injured structure or severity. Similar events can produce different symptoms in different people. Assessment distinguishes common neck symptoms from injuries requiring specific management.
Chapter sources [1]
Understand the picture
A rapid movement, followed by assessment
Before
The neck and trunk support the head.
Sudden movement
The head moves rapidly relative to the trunk.
After
Symptoms and examination guide care.
Chapter sources [1]
Which symptoms can occur?
Neck pain or stiffness, shoulder discomfort, headaches and difficulty turning are possible. Symptoms do not always start immediately; they may become noticeable later in the day.
Report a blow to the head, loss of consciousness, dizziness, memory changes or arm symptoms too. Not every consequence of an accident should be attributed to the neck without considering other injuries.
Why is initial assessment important?
The clinician considers the mechanism, your age, health history and examination. They decide whether imaging or another assessment is needed. No visible fracture does not mean the pain is imaginary; it answers only part of the question.
After a major injury or with concerning signs, do not test maximum movement yourself. If protection or immobilisation has been prescribed, follow it until the clinician responsible gives further instructions.
Chapter sources [2]
When is urgent help needed?
Weakness in the arms or legs, difficulty walking, electric-shock sensations in the neck or back, or new neurological symptoms need urgent assessment. A sudden severe headache, confusion or speech problems after an accident are also concerning.
Call 112 in an emergency and do not drive yourself if impaired. Significant deterioration after an initial appointment requires another assessment: the first examination does not remove the need to monitor changes.
Should you rest completely?
Once injuries needing specific protection have been excluded, gradual return to usual activity is generally advised. Short walks and light tasks with breaks may be a starting point. The aim is to avoid unnecessary prolonged immobility, not to ignore pain.
A neck collar is not something to continue on your own for straightforward whiplash. This advice does not apply to immobilisation prescribed for a particular injury.
Chapter sources [1]
What can physiotherapy contribute?
A physiotherapist can help restore comfortable movement, return to activity and gradually increase tolerance of effort. Assessment also considers difficult tasks and concerns that make movement harder.
A useful plan includes goals and a review point. Symptoms suggesting concussion, nerve injury or another problem require medical coordination. Neck treatment alone is not an answer to every consequence of an accident.
How can work, sleep and travel be adapted?
Spread tasks and discuss temporary adjustments if work places high demands on the neck. Seek comfortable support at night and change position when needed. Pain that substantially disrupts sleep deserves discussion with your doctor.
Driving requires enough movement and alertness. Do not return to driving if you cannot look around, feel dizzy or take medicines that make you drowsy. Safety is part of returning to activity.
How can you restart neck exercises?
Wait until the injury has been assessed and follow the instructions given. Movements are usually slow, initially small and without pulling with the hands. The programme should follow your response rather than a timetable identical for everyone.
Brief mild discomfort may accompany restarting, but lasting deterioration or new symptoms needs adjustment. Stop and seek advice if dizziness, weakness or visual changes occur.
How long can recovery take?
Many people recover over weeks to months; others have symptoms for longer. A usual timeline is not an individual promise. Sleep, other injuries, daily demands and general health can complicate recovery.
Persistent pain does not automatically mean your neck is unstable. If improvement is insufficient, assessment should revisit obstacles and other possible causes rather than conclude that recovery is impossible.
Chapter sources [1]
In everyday life
Returning after assessment
Check safety
Identify signs requiring specific care.
Restart
Choose small, tolerable activities.
Adjust
Have deterioration or insufficient recovery reassessed.
What if symptoms persist?
Record what remains difficult, what improves and what has changed. Follow-up may lead to changes in exercises, activity or medical care. The effects of the accident on sleep and a sense of safety also deserve attention.
Additional treatments should have clear goals and be evaluated. Avoid accumulating treatments based on promises to realign the neck without explaining likely benefits and limitations.
Your questions
Why did the pain begin the following day?
Pain and stiffness can have a delayed onset. Tell the clinician when symptoms began; the delay alone does not determine severity.
Chapter sources [1]
Does a normal X-ray mean nothing happened?
No. It may help identify certain bone injuries but does not show every tissue or cause of symptoms. Examination and progression remain important.
Chapter sources [2]
Should I keep a collar on to protect my neck?
Not on your own for a straightforward assessed injury. If a collar was prescribed, ask the responsible clinician when and how to stop using it.
Chapter sources [1]
Sources and references
- [1] NHS — Whiplash
- [2] HAS — Cervicalgies : ne pas recourir de façon systématique à l’imagerie
- [3] Assurance Maladie — Cervicalgie : que faire et quand consulter ?
- [4] NHS · Stroke symptoms
- [5] CGDIS Luxembourg · 112
- [6] NHS Inform — Mechanical neck pain
- [7] Cambridge University Hospitals — Neck exercises and advice
- [8] NHS Inform · Exercises for neck problems
- [9] NICE CG150 — Headaches in over 12s: recommendations
Text updated on
Medical review: awaiting Hasib Selimovic.