Why do injuries show up days after a crash?
The delay is physiological and well documented.
Adrenaline and cortisol surge during and after a collision, suppressing pain for hours. When they subside, the injury becomes apparent.
Inflammation develops. Soft tissue injuries produce swelling and stiffness that build over 24 to 72 hours. Whiplash characteristically worsens on the second and third day.
Some injuries aren't symptomatic at first. Disc injuries can produce radiating symptoms weeks later as inflammation affects nearby nerves. Concussion symptoms — headaches, difficulty concentrating, sleep disruption, mood changes — often emerge gradually and get attributed to stress.
Why this matters legally. Insurers use delayed onset to argue the injury is unrelated. The response is documentation: care within the window, consistent reporting of symptoms, and no unexplained gaps in treatment.
If new symptoms appear after your initial visit, report them to a provider and have them documented. A symptom mentioned to a friend and not to a doctor doesn't exist in the record.
Tell a doctor about every new symptom as it appears. The record is the case. ---
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