Sinus Infection Diagnosis

A sinus infection, or sinusitis, is diagnosed based on your symptoms and a physical examination. Common symptoms include nasal congestion, facial pain, headache, and fever. Your doctor may ask about how long you've had these symptoms and their severity. In some cases, imaging tests like a CT scan or nasal endoscopy might be used to get a closer look at your sinuses. If symptoms persist, lab tests may help identify if the infection is viral or bacterial, guiding the appropriate treatment. Overall, it’s about assessing symptoms and, if needed, using additional tools to confirm the diagnosis.