Whiplash after a car accident: what to do in the first two weeks
Neck pain after a car crash? A Liverpool physio explains when to get checked urgently, why you should keep moving, and what helps whiplash recover in the first fortnight.
A car accident is stressful enough without a stiff, sore neck the next morning. With whiplash, the first two weeks are when the right advice makes the biggest difference to how you recover.
This guide covers when to get checked urgently, what to do day to day, what not to do, and when physiotherapy helps.
What is whiplash?
Whiplash is a neck injury caused by the head being thrown suddenly forwards and backwards, or side to side. Clinicians often call it whiplash associated disorder, a term introduced by the Quebec Task Force in 1995 to cover the range of symptoms that can follow (Spitzer et al., 1995).
Common symptoms include neck pain and stiffness, headaches, and pain or spasm in the shoulders and arms. They often take several hours to appear (NHS, 2026), so feeling fine at the roadside doesn't mean you have escaped it.
First, rule out anything serious
Most people with neck pain after a crash don't have a serious injury, but a small number have something like a fracture. In a large Canadian study of 8,924 alert, stable adults with head or neck injuries, 1.7% had a serious neck injury (Stiell et al., 2001).
That study produced the Canadian C Spine Rule, which A&E teams use to decide who needs an X-ray. It picked up every one of the serious injuries in the study. An X-ray is recommended for people aged 65 or over, after a dangerous mechanism of injury such as a high speed crash or a rollover, or for anyone with pins and needles in the arms or legs. Being unable to turn your head 45 degrees each way also counts (Stiell et al., 2001).
Based on that rule (Stiell et al., 2001), go to A&E to be checked if you have neck pain after an accident and any of the following. The NHS advises not driving yourself there (NHS, 2026).
- you are 65 or older
- it was a high speed crash, a rollover or you were thrown from the vehicle
- numbness, tingling or weakness in your arms or legs
- you can't turn your head to either side
- tenderness directly over the bones in the middle of the back of your neck
The NHS also advises an urgent GP appointment or a call to 111 if you have severe pain despite painkillers, pins and needles, electric shock feelings, weakness in your arms or legs, or trouble walking or sitting upright (NHS, 2026).
If none of those apply, a simple rear end shunt, being able to walk around since the crash, and neck pain that came on later rather than straight away are all reassuring signs (Stiell et al., 2001).
Days 1 to 3: keep moving gently
The instinct after a neck injury is to keep it still. The research points the other way.
In a Swedish trial of 97 people, frequent gentle neck movements reduced pain more than rest and a soft collar (Rosenfeld, Gunnarsson and Borenstein, 2000). Three years later, the active group still had less pain and less sick leave, and those who started their exercises within 96 hours of the accident had neck movement equal to people who had never been injured (Rosenfeld et al., 2003).
A UK trial of 108 people found that wearing a soft collar for three weeks gave no benefit for pain, movement or daily activities compared with exercising early (Crawford, Khan and Varley, 2004). The NHS now advises against using a collar and against resting your neck for long periods (NHS, 2026).
In practice that means:
- turn your head side to side, look up and down, and tilt your ear towards each shoulder several times a day, gently and within comfort
- carry on with your normal activities as much as you can
- take paracetamol or ibuprofen if you need them, following the packet instructions (NHS, 2026)
- try a heat pack or a warm shower to ease muscle tension before you move
Days 4 to 14: build back up
Most recovery after whiplash happens in the first three months, and the pace of improvement levels off after that (Kamper et al., 2008). That makes the early weeks the time to get things right.
Through the second week, aim to get back to your usual routine, including work, driving when you can check your blind spots comfortably, and gentle exercise such as walking. If you sit at a desk, get up and move your neck regularly rather than staying fixed in one position.
The NHS advises seeing a GP if you are no better after a week (NHS, 2026). That is also a good point to see a physiotherapist.
Stress, sleep and why they matter
Car accidents are frightening, and how you feel after one affects how your neck recovers. Research on whiplash has found that high pain and disability early on, low mood, coping passively and being afraid to move were all linked with slower recovery, while details of the crash itself, such as the direction of impact, mostly weren't (Carroll et al., 2008).
A study of 76 people with recent whiplash found early signs of post traumatic stress, older age, high early disability and sensitivity to cold all predicted ongoing disability at six months (Sterling et al., 2005). Another study found that feeling constantly on edge, sleeping poorly and being jumpy, combined with older age and high early disability, predicted a poor outcome (Ritchie et al., 2013).
This is not about the pain being in your head. Your nervous system is on high alert after a frightening event, and that changes how pain is processed. The encouraging part is that it can be treated. In a trial of 108 people at high risk of a slow recovery, physiotherapy that combined exercise with stress management reduced neck disability more than exercise alone, with the benefit still there at 12 months (Sterling et al., 2019).
If you are having flashbacks, nightmares or avoiding driving, tell your GP or your physio. There is help for it.
Will I recover from whiplash?
The NHS says whiplash usually gets better within two to three months, although some people have symptoms for longer (NHS, 2026). About half of people make a full recovery, a quarter have milder ongoing problems and a quarter are left with moderate or severe pain and disability (Ritchie et al., 2013). Studies vary a lot on how many still have some neck pain at a year (Kamper et al., 2008), with one international review estimating around half (Carroll et al., 2008).
Those figures are why early advice, staying active and getting help if you aren't improving all matter.
When to see a physio after whiplash
Physiotherapy is worth booking if:
- you are no better after a week
- pain or stiffness is stopping you working, driving or sleeping
- you are worried about moving your neck
- you have headaches or arm pain alongside the neck pain
We start by screening for the warning signs above, then measure how your neck moves and how strong the supporting muscles are. Treatment focuses on getting movement back, building strength and confidence, and giving you a clear plan for the coming weeks.
Whiplash claims and medical reports
If you are making a claim, it helps to know how the system works in England and Wales. Since 31 May 2021, road traffic injury claims worth under £5,000 go through a reformed process with fixed compensation amounts for whiplash lasting up to two years (Ministry of Justice, no date). You can claim without a solicitor through the government's Official Injury Claim service, and a claim can't be settled without medical evidence (Ministry of Justice, no date).
The first medical report in a low value whiplash claim must come from an expert accredited through MedCo (MedCo, no date). A treating physiotherapist is separate from the person who writes that report, so your treatment and the claim run alongside each other. Keep a note of your symptoms and any time off work from the start.
Whiplash treatment in Liverpool
We treat whiplash at our clinics in Seaforth (Fitness Connection, 83 Seaforth Road, L21 3TY) and Speke (Business First Centre, Goodlass Road, L24 9HJ). You don't need a GP referral. Book a whiplash assessment, call 0151 559 1107 or email info@thetreatmenttable.com.
Book an appointment Call 0151 559 1107
If you have any of the urgent symptoms listed above, go to A&E or call 999 instead of booking.
References
Carroll, L.J. et al. (2008) 'Course and prognostic factors for neck pain in whiplash-associated disorders (WAD): results of the Bone and Joint Decade 2000 to 2010 Task Force on Neck Pain and Its Associated Disorders', Spine, 33(4 Suppl), pp. S83 to S92. doi:10.1097/BRS.0b013e3181643eb8.
Crawford, J.R., Khan, R.J.K. and Varley, G.W. (2004) 'Early management and outcome following soft tissue injuries of the neck: a randomised controlled trial', Injury, 35(9), pp. 891 to 895. doi:10.1016/j.injury.2004.01.011.
Kamper, S.J. et al. (2008) 'Course and prognostic factors of whiplash: a systematic review and meta-analysis', Pain, 138(3), pp. 617 to 629. doi:10.1016/j.pain.2008.02.019.
MedCo (no date) MedCo Registration Solutions. Available at: https://www.medco.org.uk/ (Accessed: 17 October 2026).
Ministry of Justice (no date) Making a personal injury (whiplash) claim. Available at: https://www.gov.uk/guidance/making-a-personal-injury-whiplash-claim (Accessed: 17 October 2026).
NHS (2026) Whiplash. Available at: https://www.nhs.uk/conditions/whiplash/ (Accessed: 17 October 2026).
Ritchie, C. et al. (2013) 'Derivation of a clinical prediction rule to identify both chronic moderate/severe disability and full recovery following whiplash injury', Pain, 154(10), pp. 2198 to 2206. doi:10.1016/j.pain.2013.07.001.
Rosenfeld, M., Gunnarsson, R. and Borenstein, P. (2000) 'Early intervention in whiplash-associated disorders: a comparison of two treatment protocols', Spine, 25(14), pp. 1782 to 1787. doi:10.1097/00007632-200007150-00008.
Rosenfeld, M. et al. (2003) 'Active intervention in patients with whiplash-associated disorders improves long-term prognosis: a randomized controlled clinical trial', Spine, 28(22), pp. 2491 to 2498. doi:10.1097/01.BRS.0000090822.96814.13.
Spitzer, W.O. et al. (1995) 'Scientific monograph of the Quebec Task Force on Whiplash-Associated Disorders: redefining "whiplash" and its management', Spine, 20(8 Suppl), pp. 1S to 73S. PMID 7604354.
Sterling, M. et al. (2005) 'Physical and psychological factors predict outcome following whiplash injury', Pain, 114(1 to 2), pp. 141 to 148. doi:10.1016/j.pain.2004.12.005.
Sterling, M. et al. (2019) 'Physiotherapist-delivered stress inoculation training integrated with exercise versus physiotherapy exercise alone for acute whiplash-associated disorder (StressModex): a randomised controlled trial', British Journal of Sports Medicine, 53(19), pp. 1240 to 1247. doi:10.1136/bjsports-2018-100139.
Stiell, I.G. et al. (2001) 'The Canadian C-spine rule for radiography in alert and stable trauma patients', JAMA, 286(15), pp. 1841 to 1848. doi:10.1001/jama.286.15.1841.