Abstract
Research on the pathophysiology of airway mucosal disease has been dramatically advanced by recent progress
in immunology in the past few decades. In ARIA (Allergic Rhinitis and its Impact on Asthma), the similarity
and relevance of the mucosal pathology of the upper and lower respiratory tracts has been pointed out. Even
otolaryngologists, who often treat upper respiratory diseases, need to understand and treat lower respiratory diseases, which have a similar pathophysiology. Allergic rhinitis and eosinophilic chronic rhinosinusitis are noted
allergic diseases in the field of otorhinolaryngology, and both are associated with lower respiratory tract diseases
(particularly bronchial asthma). In this article, we describe the pathologies and treatments of allergic rhinitis and
eosinophilic chronic rhinosinusitis.
