Seasonal allergic rhinitis.

Seasonal allergic rhinitis is the most well understood of the types of allergic rhinitides. The disease is characterized by sneezing, itching, rhinorrhea, and nasal congestion upon exposure to pollen allergens in susceptible individuals. These symptoms can cause considerable misery in affected patients. Recent advances in the diagnosis and treatment of this disorder as well as new insights into the pathophysiology of allergic rhinitis enable practitioners to provide more effective therapy.