Traumatic Brain Injury Claims in California: Proving an Injury That Does Not Show on a Scan
You were rear-ended at a light, or you went down on a bicycle, or you fell on a wet floor in a store. You never lost consciousness. The emergency room scanned your head, told you the images looked fine, and sent you home the same night.
Three weeks later you are still losing words in the middle of sentences. Grocery store lighting makes you nauseous. Your spouse has started finishing your thoughts and asking why you are so short with the kids. The scan was normal, and the insurance company will treat that normal scan as proof that nothing happened to you.
Quick answer: A mild traumatic brain injury is a real and compensable injury in California even when CT and MRI images read as normal, because standard imaging is designed to find bleeding, swelling, and skull fracture rather than the microscopic and functional injury that produces the symptoms. Loss of consciousness is not required and never has been. These claims are proved through neuropsychological testing and expert opinion admitted under Evidence Code section 801, supported by testimony from people who knew you before. The deadline is the same two years that applies to other personal injury claims under Code of Civil Procedure section 335.1, and it runs from the injury even though the brain injury often is not identified for weeks.
The Symptoms, and Who Usually Notices Them First
One of the strangest features of a brain injury is that the injured person is often the last to understand what is happening. The organ doing the self-assessment is the organ that was hurt. Families see it first, and they usually describe it as personality rather than injury.
- Cognitive. What it actually looks like: Losing the thread of a conversation, word finding trouble, forgetting appointments, taking three times as long on routine work. Who usually notices first: Coworkers and supervisors, then the injured person once work backs up.
- Physical. What it actually looks like: Daily headaches, dizziness, balance trouble, fatigue unlike ordinary tiredness, nausea in busy environments. Who usually notices first: The injured person, usually reported to a doctor first.
- Emotional and behavioral. What it actually looks like: Irritability out of proportion to the trigger, a short fuse with children, anxiety in a car, withdrawal from friends. Who usually notices first: Spouse, partner, parents, adult children.
- Sleep. What it actually looks like: Sleeping ten hours and waking unrested, or being unable to fall asleep at all. Who usually notices first: Household members.
- Sensory. What it actually looks like: Sensitivity to light and noise, blurred vision, ringing in the ears, a change in smell or taste. Who usually notices first: The injured person, often dismissed as unrelated.
Notice the pattern. The symptoms that most affect earnings and relationships are the ones other people report. That is why these cases are built from witnesses and not only from records.
What a Mild Traumatic Brain Injury Actually Is
The brain floats in fluid inside a hard skull. When your head is struck, or when your body stops violently and your head keeps moving, the brain shifts and the long fibers connecting one region to another are stretched and strained. Nothing has to break for function to change.
The word "mild" describes the presentation at the moment of injury, not the outcome. It means you were not in a coma and did not need brain surgery. It does not mean the effects are minor or temporary. Most people recover within weeks. A meaningful minority do not, and for that group the symptoms can persist for years and permanently change what work they can do.
Loss of Consciousness Is Not Required
This is the most common misunderstanding, and adjusters exploit it. A concussion is a traumatic brain injury, and it can occur with no loss of consciousness at all. Feeling dazed, being confused about what just happened, or having a gap in memory around the crash are recognized signs of the same injury.
Your head also does not have to hit anything. Rapid acceleration and deceleration of the head, the same mechanism that produces neck injury in a rear-end collision, is enough to injure the brain inside the skull.
Why the CT Scan and the MRI Come Back Normal
Emergency room imaging is doing a specific job, and it does that job well. A CT scan looks for bleeding inside the skull, a fracture, and swelling that could kill you in the next several hours. A normal reading means you are not in immediate danger. It does not mean your brain was not injured.
A standard MRI adds detail, but it is still a picture of anatomy. The injury here is at a scale below what those images resolve, and much of it is a change in how regions communicate rather than in how they look.
So the chart contains a sentence saying the study was unremarkable, and that sentence becomes the centerpiece of the defense. Insurers read your medical records for exactly that line, and for any note where you told a nurse you felt fine.
How Insurers Attack a Brain Injury Claim
The arguments are consistent enough to list. Each is answerable, but only if the record was built with it in mind.
- The imaging is negative, so there is no injury. This treats the absence of a finding on one type of test as proof of the absence of injury.
- You never lost consciousness. Presented as though it were a medical requirement, which it is not.
- Your symptoms are subjective. Meaning you are the only source. This is the argument neuropsychological testing exists to answer.
- You had depression, anxiety, migraines, or a prior concussion. Any preexisting condition gets offered as the real cause of everything.
- You are exaggerating for money. Rarely said out loud, and almost always the theme underneath a defense examination.
- The impact was too minor. Modest vehicle damage is used to argue the force was insufficient.
The preexisting condition argument deserves a direct answer. A defendant takes the injured person as they find them, a principle covered in our discussion of the eggshell plaintiff rule. A prior concussion makes you more susceptible, not less entitled.
Neuropsychological Testing: What It Is and What It Proves
A neuropsychological evaluation is a long battery of standardized tests, commonly a full day, measuring specific functions separately: memory, processing speed, attention, executive function, language, and fine motor control. Results are scored against normative data for your age and education, which converts a complaint into a measurement.
Two features make this evidence powerful. First, it produces a profile rather than a single number. Impaired processing speed and working memory alongside intact vocabulary and long term memory is a pattern consistent with injury, not a general claim of feeling unwell.
Second, these batteries include validity measures built to detect exaggerated or inconsistent effort. That cuts both ways, which is why it is credible. When a plaintiff passes them, the exaggeration theme loses its footing with a jury.
Evidence Code section 801 governs how that opinion reaches the jury. An expert may give an opinion on a subject beyond common experience, based on matter that experts in the field reasonably rely on. Test results, treatment records, employment history, and interviews with family are all matter of that kind.
Before and After Witnesses Usually Decide the Case
Expert testimony explains the injury. Lay testimony makes a jury believe it. The people who worked beside you and lived with you describe change in a way no test score can.
The useful witness does not say you seem different. The useful witness gives a concrete before and after. Your supervisor testifies that you closed twelve files a month for six years and now close five, and that you need written instructions for tasks you used to run yourself. Your sister testifies that you hosted the family holiday for a decade and last year could not follow a recipe you had memorized.
The Records That Support Them
Performance reviews, timekeeping records, sales numbers, transcripts, calendars, and text messages establish the before. Contemporaneous notes kept by you or a family member establish the after. A daily log of headaches, missed hours, and specific failures is unglamorous and often the most persuasive document in the file.
Deadlines, Shared Fault, and More Than One Defendant
Code of Civil Procedure section 335.1 gives you two years from the date of injury to file a personal injury lawsuit in California. Brain injuries create a practical trap here, because the diagnosis frequently comes months after the crash, while the clock started on the day of the crash. If a public entity is involved, a much shorter claim deadline applies, and our post on filing deadlines in California covers those differences.
California reduces your recovery by your own share of fault rather than barring it. Where more than one defendant is responsible, Civil Code section 1431.2 splits the categories of damages differently. Each defendant remains fully responsible for your economic losses, meaning medical costs and lost income, so you can collect all of those from any one of them. For non-economic damages, meaning the loss of who you used to be, each defendant pays only their proportional share. That distinction matters more than usual here, because the non-economic component is often the largest part of a brain injury claim.
When You Probably Do Not Need a Lawyer
Most concussions resolve. If you were diagnosed with a concussion, followed up with your doctor, improved steadily, returned to full duty within a few weeks, and have no lasting symptoms, you can likely settle that claim yourself. A contingency fee on it may not leave you with more than handling it alone would.
The picture changes when symptoms persist past about three months, when you are back at work but cannot do the job the way you used to, when a doctor refers you to a neurologist, or when your household has started describing you as a different person. Those are catastrophic injury claims whether or not they look like one, and they are worth many times what they are first offered.
Frequently Asked Questions
Can I have a brain injury if my CT scan and MRI were normal?
Yes. Those studies look for bleeding, fracture, and swelling. A mild traumatic brain injury is at a smaller scale and is largely a change in function, so normal imaging is expected rather than surprising.
Do I have to have lost consciousness?
No. Feeling dazed, confusion about what happened, or a gap in memory around the event are recognized signs of the same injury. Loss of consciousness has never been a requirement.
How long do I have to file a brain injury claim in California?
Generally two years from the date of injury under Code of Civil Procedure section 335.1. The clock runs from the incident, not from the day someone identified the brain injury, which is why delay is dangerous here.
What is a neuropsychological evaluation and do I need one?
It is a day of standardized testing that measures memory, attention, processing speed, and executive function against normative data. If symptoms have lasted beyond a few months, it is usually the most important evidence in the case.
The insurer says my prior anxiety explains everything. Is that right?
No. A preexisting condition can make you more vulnerable, and California does not reduce a defendant's responsibility for that. The question is what changed after the incident, not whether you were perfectly healthy before it.
What should my family be doing now?
Writing things down. Dates, specific failures, missed work, headaches, and moments that were unlike you. Notes made by the people around you are frequently more persuasive than testimony given two years later.
Told Your Scan Was Normal and Still Not Yourself? Geller Legal Can Help.
Brain injury claims are lost on the medical record and on timing. A gap in treatment, a symptom that appears in no chart until month six, and a missing baseline for how you used to work all get used to argue that nothing happened. The evidence that answers those arguments is built early, and it cannot be reconstructed on the eve of a settlement conference.
Geller Legal | Personal Injury Attorneys handles these cases with the detail they demand. We get clients in front of neurologists and neuropsychologists while the record can still be built correctly, gather the work history that establishes who you were before, and prepare the family and coworker testimony that shows a jury the difference.
We serve injured clients throughout California, with offices in Walnut Creek, Oakland, and Los Angeles. If your imaging was called clean and you still do not recognize yourself months later, that is a case worth a conversation.
Contact Geller Legal for a free, confidential consultation with Attorney Michael Geller.