Living With a Traumatic Brain Injury?

What Is a Traumatic Brain Injury?

A traumatic brain injury (TBI) occurs when a sudden force, such as the jolt of a crash, a blow to the head, or violent whiplash, disrupts normal brain function. You do not have to hit your head on anything to suffer a TBI. The brain can slam against the inside of the skull, twist on its axis, or suffer diffuse axonal shearing from rapid deceleration, and each of those movements injures brain cells.

A TBI can range from a brief loss of consciousness to permanent, life-altering impairment, and its severity is not always obvious right after a crash. The CDC notes that traumatic brain injury can affect how a person thinks, acts, feels, and learns, sometimes in ways that only become obvious once the person tries to return to work or normal routines.

According to the CDC, there were approximately 214,110 TBI-related hospitalizations in 2020 and 68,663 TBI-related deaths in 2023, which is more than 586 hospitalizations and 190 deaths every day.

TBI Severity Levels

Emergency room doctors typically grade a brain injury with the Glasgow Coma Scale (GCS), a 15-point scoring system that measures eye-opening, verbal, and motor response immediately after injury. The scale is useful for triage. Research published by the National Institutes of Health has found limits in its ability to predict long-term outcomes, particularly in milder injuries where the score can look almost normal despite lasting damage.

Long-term disability after TBI is common. A review in The Lancet Neurology reports a Glasgow cohort of hospitalized adults with TBI in which 53% of survivors were disabled at 5 to 7 year follow-up. Insurance companies use the word “mild” to lowball claims.

The American Congress of Rehabilitation Medicine’s updated 2023 criteria give clinicians a fuller framework for diagnosing mild traumatic brain injury. The criteria look at symptom clusters, clinical signs, and the mechanism of injury together, so doctors can diagnose mild TBI from symptom patterns and clinical findings without a visible wound or a positive CT scan.

NHTSA biomechanics research studies how crash forces translate into brain injury, and that work informs both vehicle safety design and the medical understanding of how these injuries occur.

Brain Imaging and Testing

Initial CT scans and standard MRIs frequently miss TBI, so a negative scan does not rule out a serious brain injury. A CT scan is usually the first image ordered because it is fast and catches bleeding, fractures, and major structural damage. Those hospital scans are baseline documents.

Diffuse axonal injury happens when the sudden deceleration of a crash twists and shears nerve fibers at a microscopic level. It rarely shows up as a distinct spot on a scan the way a contusion or a bleed does. Dartmouth Radiology documents imaging patterns where MRI picks up microstructural damage, particularly diffuse axonal injury, that a CT scan cannot detect. A radiologist experienced in TBI imaging looks for subtler signs, including small areas of restricted diffusion on specialized MRI sequences, that a general reading might miss.

• Advanced neuroimaging: Published research in the Journal of Neurology, Neurosurgery & Psychiatry confirms that Diffusion Tensor Imaging (DTI) detects white matter microstructural damage invisible to conventional MRI. FA (fractional anisotropy) reductions in the corpus callosum correlate directly with cognitive deficits, and DTI is often the strongest imaging evidence in a TBI case.
• Neuropsychological testing: a complete neuropsychological battery measures memory, processing speed, attention, executive function, and emotional regulation against population norms. The results translate self-reported symptoms into objective, reproducible, documented impairments. Research in the Journal of Neurology, Neurosurgery & Psychiatry supports comprehensive neuropsychological evaluation to document the functional impact of a TBI beyond what imaging alone can show.
• Vestibular and balance testing: inner ear disruption from TBI causes dizziness, balance problems, and vision disturbances. Vestibular testing documents these deficits, which insurance companies often try to attribute to pre-existing conditions.

TBI Symptom Categories

The CDC lists physical, cognitive, emotional, and sleep-related symptoms as the four categories most commonly reported after a brain injury: headaches and dizziness, memory and concentration problems, irritability or mood swings, and disrupted sleep. Every one of these overlaps with ordinary stress, which is why insurance companies push back on them so often.

The CDC’s HEADS UP program notes that symptoms can appear gradually, sometimes not becoming obvious until the person tries to return to a demanding job or a busy household routine. A record of each symptom as it appears is harder for an adjuster to dismiss.

Long-Term Impact of TBI

TBI effects can continue to evolve for years, sometimes decades, after the original crash. Research from The Lancet Neurology estimates that 1.1% of the entire U.S. population lives with lifelong disabilities from TBI, and that TBI effects can persist and, in some cases, worsen over time. TBI survivors face elevated risks for:

• Cognitive decline and dementia: a single moderate-to-severe TBI raised dementia risk by 26% in adults 55 and older, and a single mild TBI raised it by 25% in adults 65 and older
• Seizure disorders and epilepsy
• Depression, anxiety, irritability, and major personality changes
• Sleep disorders and chronic fatigue
• Stroke: TBI survivors have 2.3 times the stroke risk in the five years after injury
• Shortened life expectancy: after moderate-to-severe TBI, life expectancy averaged 7 years shorter in the TBI Model Systems cohort

The CDC identifies a wide range of long-term effects from moderate and severe traumatic brain injury, including chronic headaches, seizure disorders, sensory changes, and lasting cognitive and emotional shifts. Research in the Journal of Neurotrauma found that TBI reduced life expectancy by 9 years among adults who completed inpatient rehabilitation. The CDC reports that people who survive a moderate or severe TBI are 50 times more likely to die from seizures and 11 times more likely to die from drug poisoning. Among people still alive 5 years after a moderate to severe TBI, the CDC reports that 33% rely on others for everyday activities.

Men with TBI are nearly 2x more likely to be hospitalized and 3x more likely to die than women with TBI, per CDC data. People over 75 account for 32% of all TBI hospitalizations and 28% of TBI deaths.

Treatment Records and Referrals

Every visit to a primary care doctor, neurologist, or physical therapist for brain injury symptoms adds to the medical record that supports the claim. A gap in treatment, even one caused by a lack of transportation, childcare conflicts, or insurance confusion, gives an adjuster room to argue the injury resolved or was never serious. Consistent follow-up, with symptoms documented at each visit, keeps that gap from opening.

Referrals build the same record. A primary care visit that leads to a neurology referral, which leads to neuropsychological testing, creates a documented progression that mirrors how a brain injury is diagnosed and treated. Each referral recorded in the chart with its date and reason gives an adjuster or a jury a clear path from the crash to the diagnosis.

Return-to-activity timing belongs in the same record. A second blow to the head before the first injury has healed can produce disproportionately severe consequences, a pattern well documented in concussion research and a main reason doctors recommend a structured, gradual return to driving, work, and physical activity. Skipping that gradual return, often because a job or family responsibility does not allow for it, can extend recovery and complicate the medical record. A doctor’s staged clearance shows the recovery was medically supervised and gives the claim a cleaner timeline.

Witness and Employment Evidence

People with mild and moderate TBI often look and sound fine to friends, family, and insurance companies while they struggle with memory problems, emotional dysregulation, and cognitive gaps that make work and relationships nearly impossible. Documentation is the central challenge in a Kentucky TBI case.

Statements from coworkers, supervisors, and family members describe concrete changes: missed deadlines that never used to happen, a person who ran the household finances now struggling to balance a checkbook, a parent who forgets to pick up a child from practice for the first time in years.

A wage statement showing a drop in overtime hours, a written warning tied to missed deadlines, or a formal request for workplace accommodations points to the same conclusion from outside the medical chart. Adjusters weigh these records heavily because they come from a third party with no stake in the case. Return-to-work timelines are rarely linear: a person may attempt a return, struggle through reduced hours, and step back again. Research published by the National Center for Biotechnology Information documents this uneven pattern, with cognitive and emotional symptoms often persisting after physical symptoms resolve.

At home, a parent who managed the household schedule may need reminders for routine tasks, and a spouse may take over responsibilities the injured person handled for years. These shifts belong in the case file because they show the lived cost of the injury alongside its clinical description.

A child with a brain injury may not be able to describe memory problems, headaches, or mood changes. Parents and teachers often notice the change first: a drop in grades, a shorter attention span, new irritability, or sudden reluctance to do homework that used to come easily. A pediatrician or pediatric neurologist familiar with post-crash evaluation can distinguish a cognitive change from ordinary childhood behavior, for the claim and for the child’s recovery and schooling.

Recoverable Damages Under Kentucky Law

TBI survivors in Kentucky motor vehicle crashes can pursue:

• Medical expenses, past and future, including rehabilitation, medications, and long-term care
• Lost wages and diminished earning capacity when TBI prevents a return to the same occupation at the same level
• Pain and suffering, including physical pain, mental anguish, and loss of enjoyment of life
• Loss of consortium for the injury’s impact on the relationship with a spouse and family
• Punitive damages when the at-fault driver was impaired, racing, or flagrantly reckless

Life care planning supplies the future figures. A certified life care planner calculates the total future cost of care, including ongoing rehabilitation, medication, lost income, home modifications, and attendant care, and that figure becomes the foundation of the economic and non-economic damage claim.

Under KRS § 304.39-020(2), Kentucky no-fault coverage (PIP) pays up to $10,000 in basic reparation benefits for one person’s economic loss from one accident. Under KRS § 304.39-060(2)(b), damages for pain, suffering, and mental anguish against the at-fault driver require medical expenses above $1,000, or an injury that includes a fracture, permanent disfigurement, permanent injury within reasonable medical probability, permanent loss of bodily function, or death. When a brain injury results in a death, Kentucky’s wrongful death statute allows the personal representative of the estate to pursue a claim for the family’s losses.

Related pages cover concussion symptoms after car crashes and CRPS after a car crash.

How Sam Aguiar Injury Lawyers Builds a Brain Injury Case

Insurance companies commonly argue that a mild brain injury is exaggerated, especially when imaging looks normal. A case built on the ACRM’s 2023 diagnostic criteria, consistent treatment records, neuropsychological testing results, and firsthand accounts from people who know the injured person best does not depend on a single test result. Where the diagnosis is disputed, independent neurologists and neuropsychologists can testify to the injury’s cause, severity, and expected course, and Sam Aguiar Injury Lawyers works with treating physicians and independent medical experts to present the full clinical picture.

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• Dedicated three-person team: a top-rated attorney, an experienced case manager, and a skilled legal assistant. The firm’s trucking and catastrophic injury cases use the same team structure.
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Imaging, neuropsychological testing, and the people who saw daily life change carry a brain injury claim. You focus on getting better. We handle everything else. If symptoms continue after a crash, request a free case review at 502-888-8888.