Step-by-Step Guide to Filing a Traumatic Brain Injury Claim

Colburn Law

Posted by Greg Colburn in Brain Injury on January 23, 2026

Greg Colburn

personal injury lawyer

A traumatic brain injury can leave lasting problems hidden beneath the surface. In the days after an accident, many people believe they will recover, only to discover weeks later their memory, focus, mood, or decision-making have changed. Traumatic brain injury claims often become necessary when these symptoms interfere with work and daily responsibilities, helping address medical costs and long-term impact.

In Washington State, insurers commonly question delayed diagnoses and challenge whether a brain injury caused ongoing limitations. At Colburn Law—Accident and Injury Lawyers, we help individuals build strong cases by organizing medical evidence, establishing clear timelines, and showing how cognitive and functional changes affect daily life.

What a Traumatic Brain Injury (TBI) Is

A traumatic brain injury results from an external force disrupting normal brain function, often caused by a sudden impact, violent jolt, or penetrating head injury. These injuries can interfere with thinking, communication, emotional control, and physical coordination, with outcomes ranging from mild concussions to life-altering conditions affecting long-term independence.

Medical research shows brain injuries frequently follow forceful trauma to the head or body, as well as penetration of brain tissue. In more severe cases, bleeding, bruising, or torn tissue may occur, leading to lasting neurological damage or fatal complications. According to the Mayo Clinic, even mild traumatic brain injuries can temporarily disrupt brain cells, while severe injuries often produce permanent impairment and ongoing medical needs.

Symptoms do not always appear immediately, which creates challenges in both medical care and legal evaluation. Memory problems, headaches, dizziness, mood changes, and difficulty concentrating may surface days or weeks after an incident, making early recognition and documentation especially important.

What Are TBI’s Common Causes?

Traumatic brain injuries often occur during routine activities, not just catastrophic events. In Washington personal injury cases, several types of incidents frequently lead to brain injuries, including:

• Motor vehicle crashes involving cars, motorcycles, bicycles, or pedestrians
• Falls on unsafe property, worksites, or public walkways
• Physical assaults and other acts of violence
• Sporting and recreational activities
• Firearm-related incidents
• Situations involving domestic violence

Although the circumstances differ, each incident raises questions about responsibility and requires evidence linking the event to the resulting brain injury.

Understanding Traumatic Brain Injury Claims

Traumatic brain injury claims seek compensation for harm caused by another party’s negligence or wrongful conduct. Under Washington law, these cases focus on whether someone failed to exercise reasonable care and whether that failure caused the brain injury. Proving this connection often becomes challenging because neurological damage does not always appear clearly on imaging tests, which gives insurers room to question both severity and causation.

When a brain injury affects daily life, the consequences often extend well beyond initial emergency treatment. Ongoing symptoms may interfere with employment, strain family relationships, and require long-term therapy or supervision. Compensation may address medical care, rehabilitation, lost income, reduced earning capacity, and non-economic losses such as pain, emotional distress, and diminished enjoyment of life.

These damages also depend on how fault is assigned. Washington follows a comparative fault system, which allows compensation to be reduced when an injured person shares responsibility for an incident. Clear documentation, consistent medical treatment, and detailed records help protect the overall value of a claim under this framework.

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How to Prove a Traumatic Brain Injury (TBI) in Court?

Proving a traumatic brain injury in court requires showing another party’s negligence caused a measurable change in brain function. Courts and insurers begin by examining whether the injury occurred immediately after the incident and produced identifiable neurological effects.

From there, the focus shifts to evidence. Medical records reflecting diagnosis and treatment, testimony from treating providers, and documentation describing how the brain injury affects daily activities often form the core of a case. Neuropsychological testing can reveal cognitive impairment even when imaging studies appear normal, while accident reports, witness statements, and expert analysis help explain how the injury occurred and why it continues to cause harm.

Throughout this process, consistency remains critical. Delays in treatment or gaps in symptom reporting provide insurers with an opportunity to argue for an unrelated cause. Early and thorough documentation helps preserve credibility and strengthens the overall claim.

Steps to Follow After a TBI

Once liability and medical causation come into focus, the actions taken after a brain injury begin to matter just as much as the evidence itself. Each decision affects how symptoms are documented, how timelines develop, and how insurers later evaluate the claim. Taking the right steps early can reduce disputes over causation and strengthen the overall presentation of the case.

Step 1: Seek Medical Attention

Prompt medical evaluation creates the foundation for any brain injury claim. Emergency care, follow-up visits, and referrals to specialists document symptoms and establish a timeline linking the incident to the injury. All symptoms deserve attention, even seemingly minor ones, since brain injuries can worsen or reveal delayed complications.

Step 2: Gather Evidence

Evidence includes more than medical records. Photographs of the scene, incident reports, witness contact information, and personal notes about symptoms all help explain how the brain injury developed. Maintaining a journal to track headaches, memory difficulties, emotional changes, and sleep disruption can provide valuable support in traumatic brain injury claims.

Step 3: Consult With Our Personal Injury Lawyer

Legal guidance helps injured individuals understand how Washington law applies to their situation. We evaluate evidence, identify liable parties, and counter insurance strategies designed to minimize brain injuries. Early consultation also helps ensure deadlines and procedural requirements are met

Time Limit for Filing a Traumatic Brain Injury Claim

Washington law sets strict deadlines for personal injury lawsuits. Under RCW 4.16.080, most actions for injury to a person must be filed within three years from the date a claim accrues, though certain exceptions can change when the filing period begins or how long an injured person has to act. Because traumatic brain injury claims often involve delayed or evolving symptoms, early consultation with a personal injury attorney becomes especially important, allowing time to evaluate symptom progression, apply the correct filing rules, preserve critical evidence, coordinate medical documentation, and avoid avoidable delays or procedural errors during claim preparation and litigation.

Ready to Take Action? Contact Colburn Law Today

When a brain injury disrupts daily life, taking informed legal action can prevent additional financial and procedural setbacks. Traumatic brain injury claims often involve complex medical records, disputed timelines, and aggressive insurance review. At Colburn Law—Accident and Injury Lawyers, we work with clients throughout Washington to address these challenges and present claims supported by clear medical records and accurate timelines.

To speak with our office and schedule your free consultation, call 206-823-4953 today to discuss your situation and potential legal options available.

Resources for Safety Tips

• The Importance of Motorcycle Helmets for Brain Injury Prevention
• How To Prevent Traumatic Brain Injury
• What Damages Can Be Recovered After a Traumatic Brain Injury?

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