Abstract

Nasal obstruction is a symptom, not a diagnosis. The assessment of nasal congestion has objective and subjective methods. Nasal congestion or obstruction is one of the most frequent symptoms encountered in primary care and specialist clinics, and it is often the predominant symptom in upper respiratory tract disorders, such as allergic rhinitis, rhinosinusitis, nonallergic rhinitis, and nasal polyposis. According to the WHO (1997) about 12% of the population of the earth suffer from varying degrees of difficulty expressed nasal breathing and decreased sense of smell.

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