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What is Cognitive Fatigue?

Cognitive fatigue isn’t just feeling tired—it’s a type of mental exhaustion that sets in after even short periods of concentration. After a traumatic brain injury, tasks like reading, talking, or working on a computer can become overwhelming. You may feel drained after activities that used to be routine.

Legally, this matters. Cognitive fatigue can reduce your ability to work, interact socially, or care for yourself. But because it’s invisible and hard to measure, insurance companies often ignore it—unless you make it impossible to overlook.

That’s where documentation comes in. Keeping a journal of when your fatigue hits, what triggers it, and how long it lasts builds powerful evidence. Neuropsychological testing can also highlight how quickly your mental stamina breaks down compared to a healthy baseline.

Your daily struggles deserve to be taken seriously—and they can play a key role in proving the full extent of your injury. If you're dealing with cognitive fatigue, make sure it’s part of your case.

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