Neck pain after a car accident

AFTER A COLLISION

Neck pain that persists after a car accident most often comes from the facet joints. These do not show on a routine scan. So a normal MRI with pain that will not go away is the ordinary course of the injury. It is not evidence that you are exaggerating. A diagnostic medial branch block identifies the joint.

The imaging came back normal. The pain did not go away. Somewhere around week six, the tone of the conversation changed. That sequence is the ordinary course of a facet-mediated neck injury (pain driven by the facet joints). It is not evidence that you are exaggerating.

What causes neck pain after a car accident?

In a rear-end impact, the head lags behind the torso for a fraction of a second. The cervical spine (neck) bends into an S-shape before it extends. The structures loaded hardest at that moment are the zygapophysial joints — the facet joints — and their capsules. They are rich in nerves. They do not appear on a routine scan when injured. And they are the single most common identified source of chronic (long-term) neck pain after a collision.

Facet involvement is present in a substantial share of chronic neck pain overall, and the share rises with age. That figure comes from a clinic population. It is not a prediction about you. That is exactly why it is established with a block instead of assumed.

Three things are happening at once, and only one is mechanical

The joint injury is real. So is a change in how the nervous system handles signals from that segment once pain has lasted for months. In week one, the flood of nerve signals made the pain useful. That same flood keeps the dorsal horn (the pain relay in the spinal cord) sensitized. It keeps going long after the tissue has done what healing it is going to do.

And the third driver is neither. It is what an open claim does to sleep, to work, and to the ordinary sense that the problem will resolve. Litigation stress is not a character flaw, and it is not malingering (faking). It is a physiological load (a real strain on the body) on a nervous system that is already sensitized. A treatment plan that ignores it is treating two thirds of the problem. Sleep is a treatment variable, not an afterthought.

Does whiplash show on an MRI?

An MRI images anatomy. Facet-mediated pain is a functional diagnosis (it is about how the neck works, not how it looks). A normal study is the expected finding, not a surprise. The report describes what your neck looks like. It does not explain what your neck is doing. Why a normal MRI does not close the question.

What settles it is a diagnostic medial branch block. We numb the nerves that supply a specific joint and see whether the pain goes. If it does, the target is identified. If it does not, we have learned something real. And we have not treated the wrong structure for a year.

Why does neck pain start days after a car accident?

Neck symptoms after a collision commonly begin hours or days later, not at the roadside. That is physiology — the inflammatory response and the protective spasm take time. It is also the single most common thing an adjuster points at.

Which is why the record matters. Get evaluated. Describe the symptoms as they actually are, not as you hope they will be next week. Let the notes build up as you go. A gap in treatment is read as a gap in injury, whether or not that is fair.

Who pays for treatment after a car accident?

• Medical payments coverage on your own auto policy, where you have it, pays early treatment regardless of fault.
• Your health insurance, which usually still applies and may assert its own right to be repaid from a settlement.
• A lien or a letter of protection, where treatment proceeds now and is paid from the resolution of the case. See what a medical lien is and how a letter of protection works.

One thing said plainly, before treatment rather than after

The bill is for services rendered. A lien changes when it is paid. It does not change whether it is owed, and you remain responsible for it whether the case is won or lost.

We say that at the start on purpose. Picture an arrangement where the bill disappears on a bad outcome. It quietly invites treatment to pile up at no apparent risk. That is not a footing either of us should be on.

Which state the collision happened in

Missouri and Illinois handle injury claims differently, and the practice treats both sides of the river. It changes the paperwork, not the treatment. Say which one at the first appointment.

After a collision, our physician-directed physiotherapy program for neck pain covers neck decompression, home exercises, and tests for the dizziness and brain fog that can follow.

Frequently asked questions

How do I know if my neck pain is whiplash?

Whiplash is what a rear-end impact does to the neck. The neck bends through an S-shaped curve before it extends. The facet joints and their capsules take the hardest load. Those joints are the most common identified source of chronic neck pain after a collision. Yet they do not show on a routine scan. A diagnostic medial branch block numbs the nerves to one joint. If the pain goes, the source is found.

Can whiplash cause long-term neck pain?

It can. The facet joints are the single most common identified source of chronic neck pain after a collision. Once pain has lasted for months, the nervous system can stay sensitized long after the tissue has finished healing. The stress of an open claim adds its own load on sleep and work. A plan that treats only the joint treats part of the problem.

What should I do if my neck hurts after a car accident?

Get evaluated. Describe your symptoms as they actually are, not as you hope they will be next week. Let the notes build up as you go, because a gap in treatment is read as a gap in injury, fair or not. If the scan comes back normal and the pain stays, have the joints tested with a diagnostic block instead of assumed.

Do I have to pay the bill if I lose my case?

Yes. The bill is for services rendered. A lien changes when it is paid, not whether it is owed, and you remain responsible for it whether the case is won or lost. The practice says this at the start on purpose, so that nobody goes into treatment believing the bill disappears on a bad outcome.

Where to read next

• Whiplash, and what is actually injured
• Cervical facet syndrome
• Headache that starts in the neck
• When neck symptoms are urgent