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Rhinitis. Two main types :1. ALLERGIC RHINITIS2. NON-ALLERGIC RHINITISA. EosinophilicB. Non-eosiniphilic. Allergic Rhinitis. AETIOLOGYType 1 Ig E Hypersensitivity reaction in the mucous membranes of the nasal airwaysCan be seasonal or perennialALLERGENSPollens, moulds , house dust mite, animal epithelia.
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