A concussion injury claim is a personal injury case built on proving that someone else’s negligence caused a mild traumatic brain injury and the symptoms that followed. It’s a real claim with real value, but it’s harder to prove than most injuries because a concussion doesn’t show up on the scans emergency rooms rely on, and many of its worst symptoms don’t appear for days or weeks after the impact.1Centers for Disease Control and Prevention. Symptoms of Mild TBI and Concussion Winning one comes down to medical documentation, fault evidence, and hitting deadlines that are often shorter than people expect.
Why Concussions Are Hard to Prove
A broken bone shows up on an X-ray. A concussion usually doesn’t. CT scans and MRIs are routinely ordered after a head injury, but their job is to rule out bleeding or skull fractures, and for the vast majority of concussions those scans come back normal. That gives insurers an opening: if nothing looks wrong on the scan, how bad could the injury really be? The cognitive and emotional symptoms are real and well-documented, but the imaging can’t capture them.
Concussion symptoms fall into four categories: physical problems like headaches, dizziness, nausea, and sensitivity to light or noise; cognitive difficulties including trouble concentrating, mental fogginess, and short-term memory loss; emotional changes such as irritability, anxiety, and mood swings; and disrupted sleep in either direction.1Centers for Disease Control and Prevention. Symptoms of Mild TBI and Concussion Most people recover within a couple of weeks. A meaningful percentage develop post-concussion syndrome, where symptoms persist for months and interfere with work, relationships, and daily functioning.
Timing is the other complication. Some symptoms appear immediately; others emerge hours or days later, and the mix often shifts as recovery progresses.1Centers for Disease Control and Prevention. Symptoms of Mild TBI and Concussion If you felt fine at the scene and skipped medical care, the defense will argue the accident wasn’t the cause. A prompt evaluation, even when you feel okay, creates the paper trail that connects your symptoms to the impact.
The Medical Evidence That Makes or Breaks the Claim
Emergency room records are the foundation. The discharge paperwork documents your symptoms, the mechanism of injury, and the time everything happened. Even when the CT scan comes back normal, it proves you were hurt badly enough to be evaluated and that doctors took the head injury seriously enough to image it. Skipping the ER because “it’s just a headache” is the single most common mistake people make with concussion claims, and that gap becomes the defense’s best argument.
Because imaging rarely captures concussion damage, neuropsychological evaluations do the heavy lifting. A neuropsychologist administers standardized cognitive tests measuring memory, processing speed, attention, and executive function, then compares your results against norms for someone of your age and education level. Measurable deficits consistent with a traumatic brain injury give you the objective documentation that scans cannot provide. A neurologist then ties the evaluation results to the accident through a formal diagnosis, supplying the medical causation link.
Expect Your Honesty to Be Tested Too
Neuropsychological evaluations routinely include symptom validity tests designed to detect exaggeration or poor effort. The most common is the Test of Memory Malingering, where you’re shown 50 simple line drawings and asked to recognize them later. Patients with documented brain injuries perform well because the task is designed to be easy. Someone faking or exaggerating actually performs worse than someone with a real injury, sometimes scoring below what random guessing would produce.2National Library of Medicine. Symptom Exaggeration and Symptom Validity Testing in Persons With Medically Unexplained Neurologic Presentations
A clean result strengthens your credibility and makes it harder for the defense to argue exaggeration. Failing one can unravel an otherwise strong claim. The tests aren’t perfect, with roughly a 10% false-positive rate, but both sides treat the results as significant.2National Library of Medicine. Symptom Exaggeration and Symptom Validity Testing in Persons With Medically Unexplained Neurologic Presentations
Gather everything and organize it chronologically: ER reports, imaging, neuropsychological evaluations, follow-up notes, and therapy records. The records should tell a clear story from impact through ongoing treatment.
Proving Someone Else Caused the Injury
A concussion claim requires four connected pieces: the other party owed you a duty of care, they breached it, the breach caused your concussion, and you suffered actual harm. A driver who runs a stop sign owes a duty to everyone on the road and breaches it by ignoring the sign. A property owner who knows about a broken staircase and does nothing breaches the duty owed to anyone walking through the building. Your job is to draw a straight line from their carelessness to your head hitting something it shouldn’t have.
Police reports are a strong starting point when they exist, especially if the officer cited the other driver. Witness statements add third-party credibility. Surveillance footage and dashcam recordings are the most persuasive evidence because they show what happened without interpretation. Collect all of it quickly. Footage gets overwritten, witnesses forget details, and physical evidence gets cleaned up or repaired.
How Your Own Fault Can Reduce or Eliminate Recovery
The defense will argue you share some blame. How much that matters depends on your state’s system.
Most states use modified comparative fault. If your share reaches 50% or 51% (depending on the state), you recover nothing. Below that threshold, your compensation is reduced by your percentage of fault. A $200,000 award with 20% fault on your side becomes $160,000. A smaller group of states use pure comparative fault, where you can recover something even if mostly at fault. A handful still apply contributory negligence, an all-or-nothing rule where any fault at all bars recovery.
In concussion cases specifically, the defense likes to argue you weren’t wearing a seatbelt, that you were on your phone, or that you failed to seek prompt treatment and made the injury worse. That last argument ties directly to your medical records. A two-week gap between the accident and your first doctor visit lets the defense argue both that the accident wasn’t the real cause and that you failed to mitigate damages.
What a Concussion Claim Can Recover
Compensation splits into economic damages you can calculate with receipts and non-economic damages that require more subjective valuation.
Economic Damages
Economic damages include every medical bill from the emergency room through ongoing rehabilitation, plus projected future treatment costs. ER visits alone can run from several hundred dollars for a straightforward evaluation to several thousand when imaging and specialist consultations are involved. For post-concussion syndrome requiring months of neurological monitoring, cognitive therapy, and follow-up evaluations, the total grows quickly. A life care plan prepared by a medical expert projects future treatment needs and estimated costs over your remaining lifetime.
Lost income is the other major category. Pay stubs, tax returns, and employer verification letters document what you earned before the injury and what you’ve lost during recovery. When a concussion prevents you from returning to the same type of work, a vocational expert can calculate the difference between what you were earning and what you’re now capable of earning over the rest of your career. That gap, known as lost earning capacity, often becomes the largest component of a concussion claim, especially for younger workers in cognitively demanding fields.
Non-Economic Damages
Non-economic damages cover chronic pain, cognitive frustration, sleep disruption, emotional distress, and the loss of activities you enjoyed before the injury. There’s no receipt for any of this. A common approach is the multiplier method, where total economic damages are multiplied by a factor reflecting the severity and duration of the non-economic harm. Severe, long-lasting post-concussion syndrome pushes toward the higher end; a straightforward concussion with quick recovery stays at the lower end. Insurance companies use their own formulas and almost always start with a lower multiplier than the case warrants.
When the At-Fault Driver Can’t Pay
Brain injury claims can easily exceed an at-fault driver’s policy limits, and some drivers carry no insurance at all. Your own uninsured motorist coverage applies when the at-fault driver has no liability insurance or in hit-and-run situations. Underinsured motorist coverage pays the difference between the at-fault driver’s liability limits and your own higher coverage limits. Check your own policy early, because it can determine the maximum available compensation.
Taxes on the Settlement
Compensatory damages received for a physical injury, including a concussion, are excluded from federal gross income. That covers medical expense reimbursement, lost wages, pain and suffering, and other compensatory amounts paid because of the physical injury.3Office of the Law Revision Counsel. 26 USC 104 – Compensation for Injuries or Sickness Emotional distress damages that flow directly from the concussion remain excludable, but any portion compensating emotional distress not connected to the physical injury is taxable. Punitive damages are always taxable.4Internal Revenue Service. Tax Implications of Settlements and Judgments How the settlement agreement allocates payment among these categories directly affects your tax bill.
Deadlines You Cannot Miss
Every state imposes a statute of limitations on personal injury claims. Across the country, these deadlines run from one to six years, with two to three years the most common window. Miss it and the court dismisses your case no matter how strong the evidence.
Delayed Symptoms and the Discovery Rule
Concussion claims sometimes benefit from the discovery rule, which delays the start of the limitations clock until you knew or reasonably should have known about the injury. Because symptoms can surface days or weeks after the accident, the argument is that the clock shouldn’t start until the injury became apparent. It’s not automatic. The standard imposes a duty to investigate suspicious symptoms, so if you had persistent headaches for months but never saw a doctor, a court could rule that a reasonable person would have sought care sooner. The rule extends your window; it doesn’t excuse ignoring obvious symptoms.
Claims Against Government Entities
If the person or agency that caused the injury works for the government, the timeline compresses. Federal tort claims must be presented in writing to the responsible agency within two years of the date the claim arises, and any lawsuit must be filed within six months after the agency denies the claim.5Office of the Law Revision Counsel. 28 USC 2401 – Time for Commencing Action Against United States State and local government claims often require a formal notice of claim filed within as little as six months of the accident, well before the standard statute of limitations would expire. These shortened deadlines catch people off guard, and the consequences are absolute.
How a Concussion Claim Moves Forward
The process starts with a demand letter to the at-fault party’s insurance carrier. It lays out the facts, summarizes the medical evidence, calculates damages, and states a specific dollar amount, usually with a 30-day response deadline. A well-built demand letter supported by organized records gives you real leverage. A vague one gets a lowball response.
When negotiations stall, the next step is filing a complaint in civil court and serving the defendant. Once served, the defendant generally has 21 days to respond in federal court, with state court deadlines varying.6Legal Information Institute. Federal Rules of Civil Procedure Rule 12 – Defenses and Objections When and How Presented
After filing, both sides exchange information through discovery. Each party must disclose potential witnesses, provide relevant documents, and submit a computation of claimed damages.7Northern District of Illinois. Federal Rules of Civil Procedure Rule 26 In a concussion case, the defense will request your complete medical history, looking for pre-existing conditions or prior head injuries. You’ll receive the defendant’s insurance policy information as part of initial disclosures.
Many courts require mediation before trial. A neutral mediator helps both sides negotiate but can’t force a deal. Nothing said during mediation can be used in court. Most personal injury cases settle before trial, and mediation is where many of those settlements happen.
The Defense Medical Exam
At some point, the defense will ask the court to order you to be examined by a doctor they chose. Under the Federal Rules of Civil Procedure, the court can order this when your physical or mental condition is genuinely at issue, which it always is in a concussion claim. The defense must show good cause, and the order must specify the time, place, scope, and examiner.8Legal Information Institute. Federal Rules of Civil Procedure Rule 35 – Physical and Mental Examinations
These are commonly called “independent medical examinations,” but the doctor is selected and paid by the defense or its insurer, and the report often minimizes symptoms or disputes the connection to the accident. You’re entitled to the examiner’s full written report, including findings, diagnoses, conclusions, and test results.8Legal Information Institute. Federal Rules of Civil Procedure Rule 35 – Physical and Mental Examinations Rules about bringing an observer, recording the exam, or having your attorney present vary by jurisdiction, so check the local rules before the appointment. Document the exam yourself afterward: what the doctor did, what was asked, how long it lasted, anything unusual. That record becomes valuable if you need to challenge the report.
Concussion claims often come down to a battle of medical opinions. The side with more thorough documentation, consistent treatment records, and clean symptom validity results is the side that wins.