A concussion does not always look like an injury. There may be no cut, no cast, and no bruise. You may walk away from a rear-end crash on the 134 or get up off a grocery-store floor feeling shaken but “fine.” Then, a day or a week later, the headaches start, the words don’t come as fast, and the noise in the office feels unbearable.
That gap between the event and the symptoms is exactly where brain-injury claims get lost. This guide explains what people tend to miss, how to document a traumatic brain injury (TBI) properly, and how these claims fit into California law.
What is a traumatic brain injury?
The Centers for Disease Control and Prevention (CDC) describes a traumatic brain injury as a disruption in the normal function of the brain that can be caused by a bump, blow, or jolt to the head, or a penetrating injury. A concussion is a type of mild TBI. See the CDC’s overview.
“Mild” is a medical classification, not a description of how the injury feels to live with. Your head does not need to hit anything. A violent back-and-forth motion, the kind that happens in a rear-end collision, can be enough.
What symptoms do people miss after a crash or fall?
The CDC lists symptoms that can show up right away or may not appear for hours or days. They include:
- Headache, dizziness, or balance problems
- Nausea or vomiting
- Blurry vision, or sensitivity to light or noise
- Feeling slowed down, foggy, or groggy
- Trouble concentrating or remembering
- Irritability, sadness, anxiety, or being “more emotional”
- Sleeping more or less than usual, or trouble falling asleep
The full list is on the CDC symptoms page. The CDC also lists danger signs that call for emergency care, including a headache that gets worse and does not go away, repeated vomiting, slurred speech, weakness or numbness, seizures, unusual confusion, or one pupil larger than the other. If you see those signs, go to the emergency room. Do not wait to see if it passes.
Family members often notice the changes first. A spouse may see that you are short-tempered. A coworker may notice you rereading the same email. Those observations matter, both medically and legally.
Why do brain injuries get overlooked in the ER?
Emergency departments are built to find what can kill you today: bleeding, fractures, organ damage. A CT scan that comes back normal rules out certain serious problems. It does not rule out a concussion.
If you were also dealing with a broken wrist or a painful neck, the head symptoms may never make it into the chart. And if the chart says nothing about your head, an insurance adjuster will later argue that nothing happened to it.
How should I document a possible TBI?
Good documentation is not about building a case. It is about telling your doctors the truth, completely, and keeping a record of it.
Tell every provider about every symptom. Mention the headache, the light sensitivity, and the trouble finding words, even if the visit is about your back. If it is not written down, it effectively did not happen as far as the insurer is concerned.
Follow up when symptoms persist. Your primary-care doctor can refer you to a neurologist or other appropriate provider. Keep the appointments.
Keep a short daily log. Note headaches, sleep, missed work, and tasks you could not finish. Two or three lines a day is enough. Dated notes written at the time carry more weight than memories reconstructed months later.
Ask people around you to write down what they saw. A short, dated note from a supervisor or family member about specific changes can be useful.
Preserve the evidence of the event itself. For a crash, that means photos of the vehicles, the police or CHP report, and dashcam footage. For a fall, it means photos of the hazard, the incident report, and the names of witnesses. Surveillance video in stores and parking lots is often overwritten, so ask early.
Who is responsible for a brain injury from a crash or fall?
California’s basic rule is in Civil Code section 1714: everyone is responsible for injuries caused by a lack of ordinary care. In practice, that means:
- Car crashes. A driver who was speeding, distracted, or following too closely may be responsible for a concussion caused by the collision. Our car accident page covers how fault is proven.
- Slip, trip, and fall injuries. A property owner or business that failed to fix or warn about a dangerous condition may be responsible when someone hits their head in a fall. See our premises liability page.
California also uses comparative fault, so a claim is not automatically defeated just because the other side argues you share some blame. How fault is divided depends on the facts.
What do insurers argue in TBI claims?
Expect three arguments.
“The scan was normal.” Imaging is one tool. A normal CT does not mean there was no concussion, and the CDC’s own materials describe concussion as an injury diagnosed largely by symptoms.
“There was a gap in treatment.” If weeks went by between the ER and your next doctor visit, the insurer will say something else caused your symptoms. Consistent care closes that gap.
“It was pre-existing.” Prior headaches, migraines, or anxiety do not bar a claim. The question becomes how the incident changed your condition. Honest, complete medical history helps here. Hiding prior problems hurts.
What losses can a brain-injury claim include?
The categories are the same as in any personal-injury case: medical care, lost income, future care if the evidence supports it, and non-economic harm such as pain, emotional distress, and loss of enjoyment of life. With a TBI, the effect on work and daily life is often the heart of the claim. That is why the daily log and the observations of people who know you matter so much.
We cannot tell you what any claim is worth, and nobody honest can before reviewing the records. What we can say is that a well-documented brain injury is taken more seriously than one that shows up for the first time in a demand letter.
How long do I have to file?
For most personal-injury claims against private parties, Code of Civil Procedure section 335.1 sets a two-year limitation period. Claims against public entities, such as a city whose sidewalk caused a fall, generally require a much earlier government claim. Do not assume you have two years in every situation.
Because TBI symptoms can develop slowly, people sometimes wait too long, hoping things will improve. Getting medical care and legal advice does not commit you to a lawsuit. It protects your options.
What should I do this week?
- See a doctor and describe every symptom, including cognitive and emotional ones.
- Start a simple daily symptom log.
- Save photos, reports, and witness contacts from the crash or fall.
- Do not give a recorded statement to the other side’s insurer before you understand your injuries.
- Talk with a lawyer who handles brain-injury claims in California.
Talk With Advo Law
Brain injuries are hard to see and easy to dismiss. We take the time to understand how the injury has changed your daily life and how to prove it. Reach out through our contact page.
Contact Advo Law, APC
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This article is general information about California law, not legal advice about your specific situation. Reading it does not create an attorney-client relationship. Attorney advertising.
