Mild traumatic brain injury cases face a paradox. The “mild” classification refers to the initial Glasgow Coma Scale score (13-15), not to the long-term consequences. A mild TBI can produce persistent cognitive problems, mood disorders, headaches, and functional limitations that disrupt the plaintiff’s life for years. But “mild” is what the defense calls it. The legal challenge is proving an invisible injury, one without dramatic imaging findings, to insurers and juries trained to look for visible damage.
What “mild” actually means #
The medical classification:
| Indicator | Mild TBI threshold |
|---|---|
| Glasgow Coma Scale | 13-15 |
| Loss of consciousness | None, or less than 30 minutes |
| Post-traumatic amnesia | Less than 24 hours |
| Initial imaging | Often normal on CT |
| Neurological exam | Often grossly normal on initial assessment |
The American Congress of Rehabilitation Medicine, the Centers for Disease Control, and the World Health Organization all use similar criteria. “Mild” in this classification does not mean the symptoms are mild or that recovery is guaranteed. It refers to the initial clinical severity.
Symptoms that often persist #
Mild TBI can produce persistent symptoms across multiple domains:
- Cognitive: memory loss, attention deficits, slower processing speed
- Physical: headaches, dizziness, balance problems, fatigue, light or sound sensitivity
- Emotional: irritability, anxiety, depression, mood changes
- Sleep: insomnia, hypersomnia, disrupted sleep patterns
- Behavioral: personality changes, social withdrawal, executive dysfunction
When symptoms persist beyond the expected recovery window (usually 3-6 months for most mild TBI patients), the condition is sometimes called post-concussion syndrome. The persistent symptoms form the core of the damages claim.
The proof problem #
The fundamental challenge in mild TBI cases is the absence of “the picture.” Severe TBI cases produce dramatic CT and MRI findings: hemorrhage, contusion, edema, midline shift. The injury is visible. Mild TBI cases rarely produce comparable imaging.
The plaintiff has to prove the injury through indirect evidence:
- The mechanism of injury (force consistent with TBI)
- Symptoms documented contemporaneously with the injury
- Neuropsychological testing showing measurable deficits
- Witness testimony about behavioral changes (family, coworkers)
- Treatment records documenting persistent symptoms
- Functional documentation (lost work, lifestyle changes)
The defense argues, predictably, that the plaintiff is exaggerating, malingering, attributing pre-existing problems to the incident, or responding to the litigation rather than to genuine injury.
Neuropsychological testing as the foundation #
Neuropsychological evaluation is the single most important evidence category in most mild TBI cases. The evaluation tests:
- Attention and concentration
- Memory (working, short-term, long-term)
- Processing speed
- Executive function
- Language function
- Visual-spatial function
- Motor function
- Emotional functioning
The testing is standardized, normed against age-matched controls, and resistant to ordinary malingering. Most neuropsychological batteries also include validity tests designed to detect effort levels and identify performance inconsistent with genuine impairment.
Quality neuropsychological evaluation by a board-certified neuropsychologist is generally required for serious mild TBI cases. The evaluator becomes the trial expert and frequently the most important witness.
Imaging advances #
Standard CT and MRI imaging usually fail to capture mild TBI. But advanced imaging techniques can sometimes find abnormalities:
- Diffusion tensor imaging (DTI) detects white matter changes
- Magnetic resonance spectroscopy measures metabolic changes
- Functional MRI shows activation patterns during cognitive tasks
- Susceptibility-weighted imaging detects microhemorrhages
These techniques are not standard of care for routine TBI diagnosis. They are litigation-specific tools used to find imaging evidence in cases where standard imaging was negative. Defense often challenges their methodology and clinical relevance, so the advanced imaging is supportive rather than dispositive.
Damages categories in mild TBI #
Damages tend to be smaller than in moderate or severe TBI cases but can still be considerable:
- Medical expenses (often modest, since mild TBI does not require extensive ongoing treatment)
- Lost wages during recovery
- Lost earning capacity (in cases with persistent functional limits)
- Pain and suffering
- Loss of enjoyment of life
- Cost of cognitive rehabilitation or therapy
- Loss of consortium in cases with severe relational impact
The damages model often emphasizes lifestyle and functional impact rather than concrete medical costs. The plaintiff’s testimony about daily challenges, family member testimony about changes, and vocational evidence of work impact carry heavy weight.
Settlement reality #
Mild TBI cases settle across a wide range. Cases with clear mechanism, strong neuropsychological evidence, and persistent documented symptoms can produce six-figure settlements. Cases with weak proof or short symptom duration may settle in the low five figures or fail entirely.
The settlement turns on three factors:
- The credibility of the persistent symptom claim
- The objectivity of the neuropsychological findings
- The plaintiff’s pre-injury baseline (a high-functioning plaintiff with clear post-injury decline produces stronger damages than a plaintiff with comparable pre-injury problems)
Defense strategies #
Mild TBI defense follows a predictable pattern:
- Challenge symptom causation (other explanations, pre-existing conditions)
- Conduct surveillance to find activities inconsistent with claimed limits
- Demand independent medical examination by defense-friendly neuropsychologist
- Subpoena pre-injury medical and mental health records
- Subpoena employment records to find pre-existing performance issues
- Use social media to find activities suggesting normal function
Counsel for the plaintiff anticipates these strategies from intake forward. Social media management, careful client preparation, and disciplined response to records requests shape the case for trial.
The role of mild TBI in litigation strategy #
Mild TBI claims are often part of broader injury cases. A motor vehicle accident plaintiff with orthopedic injuries plus mild TBI may have a stronger overall case than either claim alone. The cognitive and emotional aftermath supports pain and suffering damages even when the physical recovery is good. This combined-claim posture is the most common context for mild TBI litigation in Georgia.
This article is for informational purposes only and does not constitute legal advice. Personal injury cases turn on specific facts and applicable law that vary by case. If you have been injured in Georgia and want to understand your legal options, consult a licensed Georgia personal injury attorney.