Allergic rhinitis What is an allergy? Allergy is the body’s reaction to an external agent. The nasal mucosa prevents external contaminants like dust, pollen, and other micro-particles from reaching the lungs by trapping them. These agents can initiate an allergic response in the mucosa. Allergic Rhinitis is inflammation of the nasal mucosa to an allergen. Note: Allergy can be seasonal (as in the case of specific pollen grains),…