| http://www.w3.org/ns/prov#value | - A person who has perennial rather than seasonal rhinitis experiences allergy triggers all year round, from allergens such as house dust mites, mould, animal dander and feathers.What are the symptoms of allergic rhinitis?The body???s immune system interprets the allergen, such as pollen, mould or dander, as an invader and responds by releasing a chemical called histamine into the bloodstream.
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