You didn’t lose consciousness. The emergency room sent you home. The CT scan was normal. But weeks later, you can’t concentrate, you forget simple things, headaches are constant, and you’re not yourself anymore.
Mild traumatic brain injury, commonly called concussion, is vastly underdiagnosed and frequently dismissed. Understanding these injuries helps you pursue claims for damage that doesn’t appear on standard imaging.
What Makes Brain Injury Mild
Medical terminology can mislead. Mild traumatic brain injury means the initial presentation was less severe than moderate or severe TBI. It doesn’t mean the effects are mild or that the injury is unimportant.
Mild TBI criteria include loss of consciousness less than 30 minutes or none at all, post-traumatic amnesia less than 24 hours, Glasgow Coma Scale score of 13 to 15 at initial evaluation, and no abnormalities on standard CT imaging.
Many accident victims meet these criteria without anyone recognizing they’ve sustained brain injury. They’re evaluated for visible injuries, their confusion is attributed to shock, and they’re sent home without brain injury diagnosis.
The term concussion describes the same injury as mild TBI. Some patients find concussion less frightening than brain injury, but the underlying condition is identical.
How Car Accidents Cause Brain Injury
Direct head impact causes obvious brain injury mechanisms. Striking the steering wheel, window, dashboard, or other objects transfers force to the brain.
Acceleration-deceleration forces can cause brain injury without any direct head impact. The brain moves within the skull when the head is rapidly accelerated then decelerated. This movement causes the brain to impact the inner skull surface, stretches axons, and can cause diffuse injury.
Rotational forces are particularly damaging. The brain’s consistency differs across regions, causing differential movement during rotation. This shearing force damages axons throughout the brain.
Coup-contrecoup injury occurs when the brain impacts the skull at the point of impact (coup) and then rebounds to impact the opposite side (contrecoup). This mechanism causes multiple injury sites from a single impact.
Symptom Patterns
Mild TBI symptoms vary considerably between individuals but cluster into several categories.
Cognitive symptoms include difficulty concentrating, memory problems especially for new information, slowed thinking and processing, and word-finding difficulty. These symptoms affect work performance, conversation, and daily tasks.
Physical symptoms include headaches, often daily and persistent, dizziness and balance problems, fatigue that isn’t relieved by sleep, noise and light sensitivity, and sleep disturbance including both insomnia and excessive sleeping.
Emotional symptoms include irritability and mood swings, anxiety and depression, emotional lability with inappropriate laughing or crying, and personality changes noticed by family.
Visual symptoms include blurry vision, difficulty tracking moving objects, and eye strain with reading or screens.
Symptoms may appear immediately after injury or develop over hours to days. Some symptoms worsen before improving. The pattern varies considerably between individuals.
Why Imaging Looks Normal
Standard CT and MRI scans often appear normal in mild TBI because they’re designed to detect structural damage like bleeding and swelling. The injury in mild TBI is often functional and microscopic rather than structural.
Diffuse axonal injury, damage to the white matter connections between brain regions, occurs at the cellular level. Individual axons are stretched, damaged, and may die. This damage doesn’t show on conventional imaging but profoundly affects function.
Advanced imaging techniques can sometimes demonstrate mild TBI injury. Diffusion tensor imaging shows white matter integrity. Functional MRI reveals altered activation patterns. PET scans show metabolic changes. However, these techniques aren’t standard clinical practice and may not be available.
Normal imaging doesn’t mean no injury. It means the injury isn’t visible with the imaging technique used. This distinction matters for claim credibility.
Post-Concussion Syndrome
Most mild TBI symptoms resolve within weeks to a few months. However, 10 to 15 percent of patients develop post-concussion syndrome with symptoms persisting months or years.
The transition from acute concussion symptoms to post-concussion syndrome isn’t fully understood. Factors associated with prolonged recovery include prior concussions, older age, female sex, pre-existing anxiety or depression, and possibly genetic factors.
Medical controversy exists about post-concussion syndrome, with some researchers attributing prolonged symptoms to psychological rather than neurological factors. This controversy affects litigation, with defense experts often dismissing ongoing symptoms.
Current understanding recognizes that both neurological and psychological factors contribute to prolonged symptoms. The injury triggers changes that psychological factors may then perpetuate. This doesn’t make symptoms less real or less deserving of compensation.
Neuropsychological Testing
Neuropsychological testing provides objective documentation when imaging is normal. These comprehensive evaluations measure cognitive function across multiple domains.
Testing assesses attention and concentration, learning and memory, processing speed, executive function including planning and organization, and language. Results are compared to normative data and to estimates of pre-injury function.
Testing takes several hours and requires a qualified neuropsychologist. The evaluation produces a detailed report documenting specific deficits and their likely impact on function.
Defense experts may challenge neuropsychological testing, arguing that patients don’t give full effort or that results reflect depression or other factors rather than brain injury. Validity testing built into evaluations addresses effort concerns.
Treatment and Recovery
Mild TBI treatment has evolved significantly. The old advice of complete rest has given way to more active approaches.
Initial rest for 24 to 48 hours allows the brain to begin healing. However, prolonged rest beyond a few days may slow recovery.
Gradual return to activity follows initial rest. Physical activity, cognitive demands, and other stimulation increase as tolerated. Pushing too hard too fast can worsen symptoms, but not pushing at all delays recovery.
Targeted rehabilitation addresses specific deficits. Vestibular therapy helps with dizziness and balance. Vision therapy addresses visual symptoms. Cognitive rehabilitation builds compensatory strategies for memory and attention problems.
Psychological treatment addresses the depression and anxiety that commonly accompany brain injury and may perpetuate symptoms.
Proving Mild TBI Claims
Mild TBI claims face predictable challenges requiring thorough evidence development.
Early documentation matters enormously. Report cognitive symptoms to medical providers immediately. Don’t assume headaches and confusion will resolve. Create a medical record of symptoms close to the accident.
Neuropsychological testing provides objective evidence when imaging is normal. Get evaluated by a qualified neuropsychologist who can testify about findings.
Corroborating witnesses strengthen claims significantly. Family, friends, and employers who describe cognitive and personality changes counter suggestions of exaggeration.
Pre-injury function evidence establishes what was lost. Employment records, academic transcripts, and testimony about pre-injury capabilities document the contrast with current function.
Mild TBI claims require specialized evaluation and comprehensive documentation. This article provides general information about mild TBI claims in Georgia. For specific guidance, consult with a Georgia personal injury attorney.