Our friends at Warner & Fitzmartin Personal Injury Lawyers discuss how concussions don’t get the same attention as broken bones or spinal injuries. They’re not visible. They don’t show up on a standard X-ray. And because many people feel disoriented but otherwise functional right after a crash, they assume their head is fine. A car accident lawyer can help injured drivers and passengers pursue compensation for concussions and other traumatic brain injuries that may not be immediately apparent after a collision.
But here’s the thing — a concussion is a traumatic brain injury. It’s not a minor inconvenience that resolves on its own schedule with no consequences. Understanding what concussions actually are, how they happen in crashes, and why they’re so easy to miss can make a real difference in how you respond after an accident.
What is a Concussion?
A concussion is a mild traumatic brain injury caused by a sudden jolt, bump, or blow to the head — or by a forceful movement of the head and body that causes the brain to shift inside the skull. The brain is surrounded by cerebrospinal fluid, but in a violent enough impact, that cushioning isn’t enough to prevent the brain from moving and striking the inner walls of the skull.
That movement disrupts normal brain function. It can affect how nerve cells communicate, alter blood flow within the brain, and trigger an inflammatory response — all without causing the kind of structural damage that shows up on a CT scan.
According to NHTSA, among all age groups, motor vehicle traffic crashes are one of the leading causes of traumatic brain injury and account for the largest percentage of TBI-related deaths. Concussions represent the milder end of that injury spectrum — but “mild” is a medical classification, not a measure of how significantly an injury can affect someone’s daily life.
How Crashes Cause Concussions
You don’t have to hit your head on the steering wheel or window to sustain a concussion. In many car accident cases, the concussion is caused by the rapid acceleration and deceleration of the head during impact — the same whipping motion associated with whiplash, but with consequences that extend beyond the neck.
Rear-end collisions are a common culprit, particularly because the occupant’s head is often unsupported at the moment of impact. Side-impact crashes can force the head sideways violently. Even a frontal collision that triggers an airbag can involve enough head movement to cause a concussion — airbags prevent far more serious injuries, but the deployment itself involves significant force.
The vehicle doesn’t have to be traveling at high speed. Research has consistently shown that meaningful brain injury can result from crashes at relatively low speeds, particularly when the head movement is sudden and the occupant isn’t braced for impact.
Symptoms That Are Easy To Miss
This is where concussions become genuinely tricky. The symptoms don’t always appear immediately. Adrenaline in the immediate aftermath of a crash can mask headache and dizziness. And many concussion symptoms — confusion, difficulty concentrating, irritability, sensitivity to light — are easy to attribute to stress, exhaustion, or emotional distress after a traumatic event.
Common concussion symptoms include:
- Headache or a feeling of pressure in the head
- Dizziness or balance problems
- Blurred or double vision
- Nausea or vomiting
- Sensitivity to light or noise
- Feeling mentally foggy or slowed down
- Difficulty concentrating or remembering
- Sleep disturbances — sleeping more than usual or having trouble sleeping
- Mood changes, irritability, or unusual emotional responses
The cognitive and emotional symptoms catch many people off guard. Someone who doesn’t realize they sustained a concussion might spend days feeling irritable, struggling to focus at work, and sleeping poorly — without connecting any of it to the crash.
Post-concussion Syndrome: When It Doesn’t Resolve
Most concussions do improve with rest and time. But a meaningful portion of people experience symptoms that persist well beyond the typical recovery window. This is known as post-concussion syndrome, and it can last weeks, months, or in some cases, longer.
CDC surveillance data shows that the overall lifetime prevalence of concussion or TBI among adults ranges from 19% to 29% — a figure that reflects just how common these injuries are and how frequently their cumulative effects go untracked.
Post-concussion syndrome can include chronic headaches, persistent cognitive difficulties, depression, anxiety, and significant sleep disruption. For someone whose job depends on concentration, communication, or physical coordination, these lingering effects can have real financial consequences — not just medical ones.
Why Concussions Are Disputed In Legal Claims
The same feature that makes concussions easy to overlook clinically — the fact that they often don’t appear on standard imaging — makes them contested terrain in personal injury cases.
A normal CT scan does not rule out a concussion. It rules out structural damage like bleeding or fractures, but the cellular-level disruption that defines a concussion is simply not visible on standard imaging. Insurance adjusters know this. An argument of “the scans were normal, so the injury must be minimal” is a common one — and it’s medically inaccurate.
Thorough documentation matters enormously here. A physician’s clinical assessment, neuropsychological testing, and detailed records of symptom progression build a picture that imaging alone can’t provide. The more consistently your symptoms are documented over time, the harder it becomes to dismiss them.
What To Do After A Crash
If you were in a crash and experienced any of the symptoms listed above — even briefly — get evaluated by a physician. Don’t assume that feeling okay at the scene means you’re fine. Concussion symptoms can take hours or days to fully develop, and early documentation is critical both for your recovery and for any legal claim.
Follow all medical guidance during recovery. Rest, reduced screen time, and a gradual return to normal activity are standard recommendations — but the specifics depend on your situation. Returning to normal activity too quickly after a concussion can prolong recovery significantly.
A concussion may not look like much from the outside. But its effects on how you think, feel, and function can be far-reaching — and they deserve to be taken seriously.