Emergency first. A sudden severe headache, the worst of your life, or head symptoms that are getting worse: that is an emergency room right now, not a call to a clinic. This wire will still be here after.
Migraine Relief WireThe night edition

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The head itself

Dazed, not knocked out.

You did not black out, so you told everyone it was nothing. A concussion does not require a blackout. If the seconds after the crash are smeared, or the days since have been foggy, that is worth naming out loud.

Wire 04The head itselfFiled August 20267 min read

Key takeaways

  • Loss of consciousness is not required for a concussion. Feeling dazed, slowed, or foggy after a hit to the head, or after the head was whipped without being struck, can be enough.
  • Headache is on the CDC's list of concussion symptoms, alongside light and noise sensitivity, fog, and sleep changes.
  • Certain danger signs in the hours and days after a head injury mean an emergency room now, not a clinic appointment.
  • For the quieter, lingering kind, say the word concussion when you call; it changes what the examiner looks at.

There is a sentence readers use that we would like to retire: "I never lost consciousness, so it wasn't a concussion." It is said with confidence and it is not true. The Centers for Disease Control and Prevention's HEADS UP material is explicit that most concussions occur without any loss of consciousness, and its list of signs and symptoms reads like the week many of our readers describe: headache, fogginess, light and noise sensitivity, feeling slowed down, trouble concentrating, sleep that is off.

What "dazed" means in a crash

A concussion is a mild traumatic brain injury caused by a bump, blow, or jolt to the head, or by a hit to the body that makes the head move rapidly back and forth. That second clause matters for crash readers. Your head does not have to strike the window. The same whip that strained the neck can jolt the brain inside the skull.

What that feels like in the moment is usually small. A second or two where the world does not make sense. Not being sure how you got the car to the shoulder. Answering the officer's questions a beat late. Being unusually calm, or unusually weepy. People file those seconds under shock and move on. Keep the date and write them down anyway.

The symptoms that follow, and how they overlap

The headache that follows a concussion and the headache that follows a neck injury overlap in ways that make self-sorting impossible. Both are worse with screens. Both want a dark room. Both can come with nausea and fog. The overlap is not a problem for an exam, which looks at both regions. It is a problem for a person trying to decide, alone, whether to call.

Our suggestion is to stop trying to decide which one it is. Describe what happened and what has been true since, and let someone who examines crash injuries do the sorting.

A wet suburban arterial road at night seen from the shoulder, tail lights streaking into the distance under a glowing traffic signal and light rain
The stretch of road where it happened looks ordinary a week later. The seconds after the hit are the part to write down.

The danger signs: the emergency room, not a clinic

The CDC publishes a short list of danger signs after a head injury, and we reproduce the spirit of it here because it is the one thing on this page that cannot wait for a phone call. A headache that gets worse and does not go away. Weakness, numbness, or decreased coordination. Repeated vomiting. Slurred speech. One pupil larger than the other. Drowsiness or being unable to wake up. Convulsions or seizures. Increasing confusion, restlessness, or agitation. Losing consciousness, even briefly, after the injury.

Any of those, in the hours or days after the crash, is an emergency room now. This desk will still be here when you are out. For the quieter, lingering kind, the kind that is foggy and sore and slow but not getting worse, the exam is the step.

What to say when you call

Three things, then a fourth. Car crash. The date. Headaches have been part of it since. And then: my head hit the window, or I was dazed, or I have been foggy since. The fourth thing matters because Missouri Injury Clinic publishes concussion rehab after acute injury as a separate lane, and the tools it names on its own site are built for that lane: neurofeedback, oculomotor rehabilitation, sensory motor integration, exercise with oxygen, cognitive rehabilitation software, vagus nerve stimulation delivered as gentle microcurrent at the tragus, and Alpha Stim.

We list those because the clinic lists them. We make no claim about what they do for any individual reader; the clinic's own language is rehab after the acute phase, and what that means for you comes out of the exam, not this page.

Rest, and the limits of rest

The general advice after a concussion, from the CDC and from nearly everyone, is to rest the brain for the first day or two, ease back into activity as symptoms allow, and avoid anything that risks a second hit while recovering. That is general and true. It is not a substitute for being examined, and it does not tell you whether your neck was also injured. An exam does both.

The bright lineChest pain, a sudden severe headache, weakness or numbness on one side, trouble speaking, a loss of bowel or bladder control, or a head injury with vomiting or worsening confusion is an emergency room trip right now, not a call to a clinic. An injury clinic is built for planned care. If the clinic sends you to an emergency room instead of booking you, that is the system working.

Educational reading, not medical advice. This desk cannot examine anyone; it exists to get you in front of someone who can.

Keep reading, at your own pace

The neck and the head shared the impact 03 Light, screens, and the bad-head week 05 One phone call, made from a quiet room 07