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Allergic Rhinitis

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1 Table 1. Abbreviations and Definitions of Common Terms Term Definition Allergic rhinitis (AR) An IgE-mediated inflammatory response of the nasal mucous membranes aer exposure to inhaled allergens. Symptoms include rhinorrhea (anterior or posterior nasal drainage), nasal congestion, nasal itching, and sneezing. Seasonal allergic rhinitis (SAR) An IgE-mediated inflammatory response to seasonal aeroallergens. e length of seasonal exposure to these allergens is dependent on geographic location and climatic conditions. Perennial allergic rhinitis (PAR) An IgE-mediated inflammatory response to year-round environmental aeroallergens. ese may include dust mites, mold, animal allergens, or certain occupational allergens. Intermittent allergic rhinitis An IgE-mediated inflammatory response and is characterized by frequency of exposure or symptoms (<4 days/week or <4 weeks/year). Persistent allergic rhinitis An IgE-mediated inflammatory response and is characterized by persistent symptoms (>4 days/week and >4 weeks/year). Episodic allergic rhinitis An IgE-mediated inflammatory response and can occur if an individual is in contact with an exposure that is not normally a part of the individual's environment (i.e., a cat at a friend's house).

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