<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have redness in my ear and my skin has an abnormal appearance. What could be wrong?  <response>: Based on those symptoms, it appears that you may have a viral infection known as herpangina. It commonly causes blisters in the back of the throat and mouth, as well as skin rashes, including redness in the ear. 