Traumatic brain injury presents a specific legal issue: cognitive and behavioral sequelae, often referred to as invisible disabilities, escape the traditional assessment frameworks for bodily harm. The victim finds themselves facing an insurer that minimizes damages that are difficult to quantify, often without knowing the procedural levers available to them.
Legal protection for vulnerable adults after a traumatic brain injury
Post-injury cognitive disorders (attention deficit, anosognosia, disinhibition) compromise the victim’s ability to defend their own interests in a compensation procedure. We observe that this aspect is rarely anticipated, even though it conditions the validity of the acts signed by the brain-injured person, including a settlement with the insurer.
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Three levels of protection exist depending on the severity of the impairment. Judicial protection can be obtained quickly, either by request to the public prosecutor or through a medical declaration, and allows for the retroactive contestation of harmful acts. Curatorship, whether simple or enhanced, regulates property acts without depriving the person of their civil rights. Guardianship, the most severe measure, transfers legal representation to a guardian.
A technical point often overlooked: if the victim signs a settlement protocol while their cognitive faculties are impaired, the nullity of the act can be requested on the grounds of mental incapacity (Article 414-1 of the Civil Code). It is essential that the consulting physician has documented the neuropsychological state at the time of signing. We recommend having a dated neuropsychological assessment conducted before any amicable negotiation.
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Several analyses published on the Fannylng Art website detail these legal vulnerability issues that weigh on the effective compensation of victims.
Convention on the Rights of Persons with Disabilities and full compensation
The legal basis for compensation for traumatic brain injury is not limited to general civil liability law. Article 19 of the International Convention on the Rights of Persons with Disabilities establishes a right to live in society on an equal basis with a person without disabilities. This text serves as a lever to demand compensation items that insurers systematically refuse in their initial offers.
In practice, this concerns three undervalued items in the majority of traumatic brain injury cases:
- Permanent human assistance, including for invisible sequelae (cognitive stimulation, supervision of daily activities, prevention of risks), and not just assistance with personal hygiene or mobility
- Adaptation of housing and work environment, which goes beyond mere physical accessibility to include reducing sensory stimuli or adapting computer workstations
- Establishment damages and sexual damages, frequently overlooked even though post-traumatic behavioral disorders destroy the victim’s relational life
The combination of the principle of full compensation (without loss or profit) and this Convention requires quantifying each item based on actual need, rather than a flat-rate scale. Neuropsychological expertise is the key element to transform these abstract rights into concrete compensation.
Medical expertise of traumatic brain injury: costly mistakes
The medico-legal expertise of a traumatic brain injury is technically complex. A generalist expert physician lacks the tools to assess a dysexecutive syndrome or chronic cognitive fatigue. Neurocognitive sequelae require a neuropsychologist expert, whose appointment is not automatic.
First common mistake: accepting a single expertise conducted by the physician appointed by the insurer. This practitioner has no obligation of independence from their principal. The victim has the right to be assisted by their own consulting physician, specialized in bodily harm, during each expertise operation. This right exists in both amicable and judicial procedures.
Second mistake: premature consolidation. The sequelae of a traumatic brain injury evolve over several years, particularly behavioral disorders and neurological fatigue. Accepting a consolidation date that is too early freezes the assessment at a time when the clinical picture is not stabilized. The victim’s consulting physician must formally oppose any anticipated consolidation and demand a timeframe compatible with the actual neurological evolution.
Documenting invisible sequelae before the expertise
The hospital medical file is not sufficient. Behavioral disorders, attention difficulties, irritability, and loss of initiative manifest in daily life, not during consultations. We recommend compiling a file that includes:
- A complete neuropsychological assessment conducted by an independent professional, with standardized tests (not just the MMS, which is too coarse for frontal impairments)
- Written testimonies from family and friends describing concrete behavioral changes, dated and detailed
- A daily difficulties tracking journal maintained over several weeks (forgetfulness, fatigue, sleep disturbances, relational incidents)
- Follow-up reports in physical medicine and rehabilitation, occupational therapy, or speech therapy
This pre-expertise file directly conditions the amount of compensation, as it makes visible what a one-time clinical examination cannot capture.
Prescription deadlines and avenues for recourse in bodily harm
The prescription period for compensation action against the perpetrator of the damage or their insurer is ten years from the consolidation (and not from the accident). For victims whose consolidation occurs years after the trauma, this long period theoretically provides protection. In practice, the difficulty lies elsewhere.
In the case of a road accident, the Badinter law requires the insurer to make a compensation offer within eight months from the accident, followed by a final offer within five months after consolidation. Failure to comply with these deadlines results in an automatic increase in the compensation by doubling the legal interest rate, a tool rarely activated by unassisted victims.
When the insurer’s offer is manifestly insufficient, the victim has two main avenues: bringing the matter before the judicial court to obtain a contradictory judicial expertise, or contacting the compensation commission for victims of offenses (CIVI) when the perpetrator is unknown or insolvent. The choice depends on the context of the accident and the profile of the insurer, but in both cases, the assistance of a lawyer specialized in bodily harm and a consulting physician for victims radically changes the outcome of the case.
Traumatic brain injury remains one of the most poorly compensated injuries, precisely because the damages are invisible and victims are unaware of the mechanisms that exist to have them recognized. Anticipating legal protection, mastering the timeline of the expertise, and documenting daily sequelae are the three levers that can turn a case around.