If you were injured due to the negligence of someone else, you should sek prompt medical attention. It does not matter whether you were injured in a motor vehicle accident, as a result of medical malpractice, or by some other cause. It is extremely important that you seek medical treatment. Why?
First, and most importantly, prompt medical attention will maximize your chance of a full recovery from your injuries. Even in situations in which your initial injuries appear minor, those injuries can develop into larger, and more difficult to treat, conditions.
Second, in the event that you later decide to pursue a legal claim against the person who caused your injuries, the timing and scope of medical treatment will likely have a large impact on the resolution of your case. Any insurance company who reviews your legal claim will definitely be skeptical of a claim for permanent injuries if you never sought prompt treatment. Juries might also view such a claim skeptically.
Bottom line is that if you are injured, it is always in your best interest to seek immediate medical help.