Some injuries lack clear evidence on medical imaging like X-rays or MRIs, complicating their validation. Soft tissue injuries (e.g., sprains or whiplash), back injuries (e.g., chronic pain), and psychological conditions (e.g., stress) often fall into this category. Insurance companies may question these claims, particularly when causation, duty of care, or comparative negligence is at issue. Demonstrating that the injury stemmed directly from the accident—and not a pre-existing condition—requires meticulous documentation.