A medical diagnosis (abbreviated Dx,[1] Dx, or Ds) is the process of determining which disease or condition explains a person's signs and symptoms. It is often referred to as a diagnosis, with the medical background implied. The information needed for a diagnosis is usually gleaned from the patient'

The approach to differential diagnosis is based on the process of finding as many candidate diseases or conditions as possible that could cause signs or symptoms, and then eliminating or at least making the entries more or less likely through further medical testing and other treatments, aiming to r