Is going to the emergency room necessary after an accident?

Well first let's distinguish between what medical needs are and what I as a lawyer would like to see when I am interviewing a client post accident. From the medical stand point you want to get medical attention you believe you reasonably require as soon as possible after an accident. If you have symptoms that are a concern see a doctor, whether it's in an emergency room, whether it's you're primary care doctor or an urgent care center and follow their advise and direction.