There are many reasons why a person would have headaches. It could be because of the consumption of certain foods or because the person decided to skip meals and not eat. Stress can cause headaches as well as not getting enough sleep. However, whiplash is more than likely the reason for those who have been injured in a car accident. Headaches The symptoms of whiplash can be felt throughout the whole body. Some the main painful locations in the body include the neck, arm, low