How can I know if I have refractory sinusitis? It can be determined in several ways. ① Medical history: For example, the patient has a history of asthma, aspirin intolerance, allergic rhinitis, etc. ②Multiple nasal polyps: These patients’ nasal cavity is filled with polyps, and if CT is taken, you can see eight sinuses full of lesions inside, and even some patients show osteitis, all suggesting that treatment will be tricky. ③ Allergic: If allergen testing suggests that the patient’s symptoms are related to allergies, then such patients also belong to the recurrence-prone group. In short, the doctor will have a general judgment of whether the patient belongs to refractory sinusitis through consultation and examination before surgery, and will inform the patient of the difficulty of surgery and the possibility of recurrence after surgery. Patients with refractory sinusitis should pay more attention to postoperative review and medication to prevent or delay recurrence and improve quality of life.