<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi doctor, I have been experiencing a sore throat, nasal congestion, and throat swelling. Can you tell me what might be causing it?  <response>: It sounds like you may have an abscess of the pharynx. Well need to perform some tests to confirm, but its likely that you have an infection that has caused a pocket of pus to form in the back of your throat. Lets get you started on some antibiotics right away to begin treating the infection. 