In this study, the goal was to investigate only whether upper abdominal symptoms or rhinosinusitis symptoms affect eosinophilic inflammation of the lower respiratory tract in asthmatic patients sufficiently treated by standard asthma therapy. The present results do not necessarily suggest that some factors of the G scale, which do not affect FeNO levels, do not reflect airway inflammation of asthma. The possibility that some factors of the G scale or modified F scale may affect airway inflammation, especially noneosinophilic inflammation, under sufficient treatment for asthma, was not ruled out.