Whiplash is a common neck injury after a car accident but filing a claim for compensation for this injury can be problematic, as insurance companies tend to think that whiplash injuries, which cannot be viewed on x-ray, tend to be exaggerated.
The best way to ensure you will get compensated for your whiplash injury is to get to a doctor immediately after the crash if you feel even a twinge of pain or discomfort in your neck or back. Many serious neck and back injuries do not produce symptoms for several hours or days after the crash.
Your doctor, being aware of your accident, will be looking for signs of a whiplash injury, and will be noting these signs in your medical records. If you wait a week after the accident to see your doctor, the insurance company will contend the whiplash was caused by another injury.