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| - Seasonal allergic rhinitis (SAR), which occurs in spring, summer, and early fall, is caused by allergic sensitivity to pollen (from trees, grasses, or weeds) or mold spores that are airborne.1,2 Perennial allergic rhinitis (PAR) typically causes year-round symptoms due to hypersensitivity to allergens such as dust mites, animal dander, cockroaches, and mold spores.1-4
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