The defendant's insurer will ask you to sign an authorization to allow release of your medical records. Try to avoid doing so. It is not to your advantage for your opponent to review your medical records before you and your own attorney see them. You have the right to restrict the authorization to records relevant to the injury in question, rather than give a blanket authorization that releases everything back to the day you were born. Never authorize disclosure of records of psychiatrists, psychologists or family counselors. Mental health records are privileged and need not be released to anyone (unless you claim that the collision caused an injury to your mental health).  Disclosure of mental health records has the potential to "open a can of worms" that will distract the attention of the jury from the legitimate issues to be decided in your case.