Effect of Electromagnetic Therapy on Patients With Chronic Rhinosinusitis.

Inclusion Criteria: * patients suffering from mild to moderate symptoms of rhinosinusitis. Exclusion Criteria: * pregnant or breastfeeding women. * patients with definite deviated nasal septum, sinusitis, or history of operation within the last 6 months. * patients with hypertension, diabetes mellitus, malignancy, active pulmonary tuberculosis, infection, active respiratory disease like asthma, or other systemic diseases. * patients with long-term use of corticosteroids or immunosuppressive agents. * patients who were involved in another clinical study within 30 days. * patients who were unable to comply with the follow-up schedules. * patients who had used antihistamines within 1 week, topical corticosteroids within 2 weeks, systemic corticosteroids within 4 weeks, anti-cholinergic drugs within 3 days, antileukotriene drugs within 1 week, decongestants within 3 days, tricyclic antidepressants or phenothiazines within 2 weeks, non-steroidal analgesics within 2 weeks, and other drugs which the researchers believed were inappropriate.