### Patient: Hi doctor, I've been dealing with really bad sinus problems lately, and it's been going on for a while now. Can you help me figure out what's causing this?
### Doctor: Based on your symptoms, it sounds like you might have chronic sinusitis. To properly diagnose this condition, we'll need to run a few medical tests. These include a CT scan of your sinuses, diagnostic procedures on your nose, mouth, and pharynx, and potentially an influenza virus antibody assay. Additionally, we may need to conduct other diagnostic procedures on your skin and subcutaneous tissue or perform therapeutic procedures on your nose, mouth, or pharynx. An ophthalmologic and otologic diagnosis may also be required.