Rhinitis is an inflammatory condition of the nasal mucosa characterized by sneezing, itching, rhinorrhea, and nasal congestion.1,2 Allergy, the most common primary cause, is an immunologic process that is antibody-mediated. Allergic rhinitis is classified as seasonal or perennial, depending on when symptoms occur and how long they last. Seasonal or acute allergic rhinitis (seasonal pollenosis, or hay fever) is characterized by paroxysms of sneezing, nasal and ocular pruritus, rhinorrhea, and nasal congestion during specific periods. The same cluster of symptoms, either intermittent or continuous, may occur throughout the year with no distinct seasonal pattern and is called perennial or chronic allergic rhinitis.1–5 Although allergic rhinitis can begin at any age, the peak incidence occurs during childhood and adolescence, with a higher incidence noted in persons with a family history of atopic disease.4,6,7
KeywordsAllergic Rhinitis Nasal Mucosa Pollen Season Nasal Congestion Nedocromil Sodium
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- 5.Meltzer EO, Schatz M, Zeiger RS. Allergic and nonallergic rhinitis. In: Middleton E, Reed CE, Ellis EF, Adkinson NF, Yunginger JW, editors. Allergy: principles and practice, 3rd ed. St. Louis: Mosby, 1988:1253–89.Google Scholar
- 6.Smith JM. Epidemiology and natural history of asthma, allergic rhinitis and atopic dermatitis (eczema). In: Middleton E, Reed CE, Ellis EF, Adkinson NF, Yunginger JW, editors. Allergy: principles and practice, 3rd ed. St. Louis: Mosby, 1988:891–929.Google Scholar