Chronic sinusitis is commonly treated with antibiotics, although research has suggested that nonbacterial factors may play a significant role in many cases.
A study published in Archives of Environmental Health (July 2003; 58(7):433–441) examined the sinus mucosa of 639 patients diagnosed with chronic sinusitis. The investigators reported that many patients showed evidence of high fungal exposure in both ambient air and the sinus lining. Interventions aimed at reducing fungal exposure, along with saline nasal irrigation, were associated with improvements in the condition of the sinus mucosa. The author proposed that sinusitis related to allergic or fungal sensitivity may involve underlying genetic susceptibility.
Additional observations were reported in Family Practice News (April 1, 1992), which described allergic sinusitis associated with multiple fungal species. In that report, culturing sinus mucus was recommended to identify specific fungal involvement. Among the 40 patients discussed, approximately half had a history of allergies or asthma.
Saline nasal irrigation has also been examined as a nonpharmacologic intervention. A study reported in Family Practice News (August 1, 2004:49) randomly assigned 43 patients with sinusitis to receive either nasal saline irrigation or the antibiotic amoxicillin. After 11 months, patients in the irrigation group demonstrated greater improvement on the Rhinosinusitis Disability Index compared with those receiving antibiotic therapy.
Epidemiologic data further support the role of allergic mechanisms in sinus disease. According to a report published in Medical Tribune (December 7, 1995), an estimated 25% to 70% of individuals with allergies experience sinusitis as a symptom. These findings highlight the importance of considering allergic and environmental contributors in cases of chronic sinusitis, particularly when repeated courses of antibiotics are ineffective.
