It’s chronic sinusitis .Reasons for sinusitis are deviated nasal septum,turbinate hypertrophy,polyps,allergy,anatomical abnormal cells inside sinus like haller cells etc,Needs to be evaluated by CT scan and nasal endoscopy.Treatment consists of antibiotics and intranasal steroids . If there is no adequate response may need endoscopic sinus surgery.
Next Steps
Better to consult ENT Surgeon