<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi Doctor, I have been experiencing severe pain in my mouth and face. There is also fluid retention and it hurts to open my mouth.  <response>: Based on your symptoms, it seems like you have a tooth abscess. I will need to examine you thoroughly to confirm this, but this is a common problem. We will need to drain the pus and provide medication to heal the infection. 