<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing coryza, skin lesions, and back pain lately. What could be the cause of these symptoms?  <response>: Based on your symptoms, I suspect you may be suffering from empyema. Empyema is a condition where there is a buildup of pus in a body cavity, often the pleural cavity surrounding the lungs. The coryza and skin lesions are likely secondary symptoms of the underlying condition. 