<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing excessive growth and headaches lately. Do you have any idea what might be causing this?  <response>: These symptoms might be caused by an abscess of the lung. Its a localized collection of pus in the lung that can cause fever, shortness of breath, chest pain, and coughing up blood. We need to do further tests to confirm the diagnosis. 