Most symptoms of allergic rhinitis can be readily treated.

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In some cases (particularly children), people may outgrow an allergy as the immune system becomes less sensitive to the allergen. However, as a general rule, once a substance causes allergies for an individual, it can continue to affect the person over the long term.

More severe cases of allergic rhinitis require immunotherapy (allergy shots) or removal of tissue in the nose (e.g., nasal polyps) or sinuses.

• drowsiness and other side effects of antihistamines
• side effects of other medications (see the specific medication)
• sinusitis
• nasal polyps
• disruption of lifestyle (usually not severe)

Call for an appointment with your health care provider if severe symptoms of allergies or hay fever occur, if previously successful treatment has become ineffective, or if your symptoms do not respond to treatment.