Chronic nasal stuffiness is the most often seen problem in nasal clinic. Allergic rhinitis, chronic hypertrophic rhinitis, deviated nasal septum and chronic paranasal sinusitis with polyps are the four major causes of chronic nasal stuffiness. Beside deviated nasal septum, which is a surgery treated problem, medication is the first choice in treating those diseases. Surgery is recommended when medication fails. It was estimated that up to 10-20 % Taiwanese are suffered from allergic rhinitis. The children group may be higher as 40 %. The prevalence may go higher due to industrialization. In US, the annual expenditure on nasal surgery was around 60 billions US dollars. Early treatment of nasal problem will reduce the expensive health care expenditure. The researchers are looking for better medicines to provide better control of those nasal problems. Huaihua is the dried flower buds of Sophora japanoca L. Its pharmacological activity includes reducing vessel permeability, anti-inflammation, and anti-allergy.
