The car was barely dented. Six months on, people are implying you exaggerate.

WHIPLASH

Whiplash pain that lingers for months after a minor collision is real. In chronic (long-term) cases, the cervical facet joints (the small joints at the back of the neck) are the most commonly identified source. They show nothing on imaging. That is why a normal scan and a barely damaged car get read as exaggeration.

The car was barely damaged. Two days later you could not turn your head, and six months later people have started implying you are exaggerating.

What does whiplash do to the neck?

In a rear impact, the torso is pushed forward before the head follows. For a fraction of a second, the cervical spine is forced into an S-shape. The lower segments extend (bend back) while the upper ones are still flexed (bent forward). That brief shape is not a posture the neck can take on purpose. It loads the facet joints at the lower levels in a way nothing in normal life does.

This is why vehicle damage predicts injury so poorly. The energy that matters is the energy passed to the occupant through the seat. A stiff bumper that takes the impact without deforming passes it on to the occupant efficiently.

Why the facet joints keep coming up

Because the biomechanics point at them, and because the diagnostic evidence follows. In chronic pain after whiplash, cervical facet joints are the single most commonly identified source. That is the finding when the question is actually tested with controlled diagnostic blocks. And the reason they are so often missed is that they show nothing on imaging.

That is the central frustration of this condition. The structure most likely to be responsible is invisible to the test everybody orders. So a normal scan gets read as evidence that nothing is wrong.

Why does whiplash pain get worse a day or two later?

Most people feel comparatively little at the scene. They feel considerably more over the following twenty-four to seventy-two hours. That is ordinary inflammatory physiology. It is not an afterthought and not a sign of anything invented. It is also, unhelpfully, the pattern that makes people doubt themselves and makes others doubt them.

What we look for

• Segmental tenderness over the facet columns, checked side to side and level by level.
• Loss of rotation, and whether it is limited by pain or by a genuine end-feel.
• Rotation in flexion (turning the head while it is bent forward), which isolates C1-2. It is frequently restricted after whiplash.
• The sternocleidomastoid and the suboccipital muscles. Both refer pain (send it) into the head.
• A neurological exam, because a nerve root injury is a different problem from a joint injury.
• Where there is unsteadiness or visual disturbance, a vestibular assessment (a check of the balance system). It is a routine part of the workup here and rarely offered elsewhere.

Can whiplash cause headaches?

Post-traumatic headache after whiplash is frequently cervicogenic. That means it is generated by the upper cervical segments and referred (sent) into the head through the trigeminocervical convergence. It is side-locked (always on the same side), and it starts at the back. It responds poorly to migraine treatment because it is not migraine.

Treating the neck treats the headache in that group. It is one of the more satisfying things to get right. That is because the person has usually been cycling through headache medication for a year.

How is whiplash neck pain treated?

Movement early, rather than a collar. Collars were standard for decades, and the evidence went the other way. Immobilization (holding the neck still) prolongs recovery. Where pain is limiting movement, the sequence is to treat the pain to enable the movement, not the reverse.

If pain persists past three months and the exam points at the facet joints, a diagnostic medial branch block answers the question directly. A positive result opens the door to radiofrequency ablation, which gives months of relief and can be repeated.

On being believed

A large number of people with genuine post-whiplash pain have had the reality of it questioned. That is usually because the imaging is normal and the mechanism looked minor. Both of those are expected findings in this condition, not evidence against it.

We test the structures that are testable, and we document what we find. A positive diagnostic block is objective evidence of a pain source. It exists precisely because this condition needed something better than an argument about credibility.

The vestibular part nobody checks

Dizziness, unsteadiness and visual disturbance after a collision are common. They are usually blamed on anxiety, or on the concussion that may or may not have happened. Some of it is cervicogenic (coming from the neck). That is because the neck contributes proprioceptive information (your sense of body position) to balance. A neck that has been injured contributes distorted information.

Telling a cervical contribution from a vestibular (balance-system) one or a central (brain) one takes testing, not guessing. We do that as part of the workup. It matters because the treatments differ completely, and because untreated unsteadiness stops people driving.

Grading, and why it is not very useful

Whiplash-associated disorders are conventionally graded. The grades run from neck complaint without physical signs through to fracture or dislocation. The grading is fine for research. It does very little for an individual patient, because the great majority sit in the middle grades and the grade does not name a structure.

The examination names a structure. So does a diagnostic block, where indicated. That is the step that turns a whiplash label into a treatable diagnosis.

How long does it take to recover from whiplash?

Most recovery happens in the first three months. Somebody still in significant pain at that point is unlikely to resolve by waiting longer. And continuing to wait is the most common thing that happens to them.

That is the point at which the diagnostic question should be asked properly, instead of put off again. It is also, unhelpfully, the point at which many people are told to give it more time.

Returning to driving

Rotation is the limiting factor, and it is worth measuring rather than estimating. Can you turn far enough to check a blind spot without pain forcing you to stop halfway? If not, you are compensating with trunk rotation. Your effective field of view is smaller than you think.

That is a practical problem before it is a clinical one. It is one of the more common reasons people restrict their own lives after a collision without ever describing it as a symptom.

What we document

Range measured in degrees. Strength graded by muscle. The segments that bring on pain on palpation (pressing by hand). The response to any diagnostic block, recorded hour by hour. That record exists because it is how treatment decisions get made. It also happens to be the objective account of an injury that imaging does not show.

We do not write records to support a case, and we do not write them to undermine one. We write what the examination found. That is the only version that is useful to anybody.

The upper cervical segments specifically

C1-2 and C2-3 take an outsized share of the load in the S-shaped phase of the injury. And they are the segments least examined afterward. Rotation measured in flexion isolates C1-2 and takes seconds. It is restricted often enough after whiplash to be worth doing on everybody.

Where it is restricted and the headache is occipital (at the back of the head) and side-locked, an atlantoaxial injection reaches a level nothing else on the list reaches.

Orthobiologic treatment options

After a collision, the strained parts are usually the facet joint capsules and the small ligaments around them. When the pain has settled into one or two joints proven by a block, and has lasted for months, PRP into those joints is an option. We use it alongside rehab. A 2025 study looked at people with long-term whiplash treated with neck facet PRP. It found that those who responded improved in pain, disability and neck muscle strength. It also found that strength gains mattered as much as pain relief.

The shot is guided, you stay awake with local numbing, and most people drive home. It is done at our regenerative clinic, 4477 Woodson Rd in St. Louis. Arm and shoulder pain after a crash is not always the neck. Read shoulder arthritis, biceps tendonitis and tennis elbow.

How PRP, bone marrow and fat compare after a crash injury is covered on our PRP and orthobiologics page.

Many whiplash patients also go through our physiotherapy program for neck pain, built around neck decompression and deep neck exercises.

What people ask after a collision

Do I need a referral after a car accident?

No. Book directly. If the care is going to an auto claim or an attorney is involved, that does not require a referral either; the billing simply works differently. Some health plans still want a referral on file for specialist visits billed to them. How neck care after a collision gets paid for.

My car was barely dented. Can I really be injured?

Yes, and this is one of the most consistently misunderstood parts of it. Vehicle damage and occupant injury correlate poorly. That is because a bumper that does not deform passes energy on rather than absorbing it. How care works while a claim is open.

How long should this take to settle?

Most people improve substantially over six to twelve weeks. A meaningful minority do not. That group deserves a diagnosis rather than more time. How long neck pain should take to settle.

Should I wear a collar?

No, other than very briefly in specific circumstances. Early movement produces better outcomes. Prolonged immobilization produces worse ones. What the facet joints actually do. The collar is the first item on the list of things that slow this down.

My scan was normal. Does that mean nothing is wrong?

No. The structure most often responsible after whiplash is not visible on imaging. That is a limitation of the test, not a verdict on your pain. What a normal scan does and does not rule out.

Do I need a lawyer involved before I am seen?

No. The evaluation is a clinical one and it happens the same way regardless. Cervical facet syndrome, in full.

Can whiplash get worse over time?

In the first few days, yes. Most people feel little at the scene and much more over the next 24 to 72 hours. That is ordinary inflammation, not something invented. After that, most recovery happens in the first three months. If you are still in significant pain at three months, waiting longer is unlikely to fix it. That is the time to find the source.

Can whiplash cause dizziness?

Yes. Dizziness, unsteadiness and vision problems after a collision are common and are often blamed on anxiety. Some of it comes from the neck. That is because the neck feeds position information to your balance system, and an injured neck sends distorted signals. Telling a neck cause from an inner-ear or brain cause takes testing, because the treatments are completely different. That testing is part of our workup.

When can I drive again after whiplash?

When you can turn your head far enough to check your blind spot without pain stopping you halfway. If you cannot, you are twisting your trunk to make up for it. Your real field of view is smaller than you think. Neck rotation is worth measuring rather than guessing, so we measure it in degrees at the examination.

How do you prove whiplash pain is real when the scan is normal?

By testing the structure instead of arguing about the scan. The facet joints are the most common source of lasting whiplash pain, and they do not show on imaging. A diagnostic medial branch block does test them. A positive block is objective evidence of a pain source. We record range in degrees, strength by muscle, and the block response hour by hour.

Related reading

• Cervical facet syndrome
• Cervical medial branch block
• Cervicogenic headache
• Vestibular testing
• Atlantoaxial injection
• Why your MRI does not explain it

If the collision that caused this is still an open claim, the treatment does not have to wait for it — see after a collision for how care is arranged and paid for while a case runs.