Treatments for Seasonal Allergic Rhinitis: Comparative Effectiveness Review Number 120 by U.S. Department of Health and Human Services
English | Aug. 25, 2013 | ISBN: 1492252395 | 366 Pages | PDF | 3 MB
Seasonal allergic rhinitis (SAR), also known as hay fever, is an allergic reaction in the upper airways that occurs when sensitized individuals encounter airborne allergens (typically tree, grass, and weed pollens and some molds). Although pollen seasons vary across the United States, generally, tree pollens emerge in the spring, grass pollens in the summer, and weed pollens in the fall. Outdoor molds generally are prevalent in the summer and fall. SAR is distinguished from perennial allergic rhinitis (PAR), which is triggered by continuous exposure to house dust mites, animal dander, and other allergens generally found in an individual’s indoor environment.