Pathogenetic Links Between Rhinitis and Asthma

Asthma and allergies including rhinoconjunctivitis and atopic dermatitis are common throughout the world, with resultant morbidity and cost. The nasal and bronchial mucosa present similarities, and most patients with asthma also have rhinitis (1-3), suggesting the concept of ‘‘one airway, one disease.’’ On the other hand, not all patients with rhinitis present asthma, and there are some differences between rhinitis and asthma.