If you have suffered from an illness that went undiagnosed for a period of time, for example; you visited your GP or a hospital complaining of health problems on a continuous basis and they failed to diagnose you, and you have come to harm as a result. You could be entitled to take a medical negligence civil action for damages. It is important to contact a Medical negligence solicitor if you wish to pursue a claim for your undiagnosed injury or illness.