Allergic rhinitis is an inflammatory condition of the nose. The nasal lining reacts to allergens that are breathed into the nose, which may result in runny nose, sneezing, nasal congestion and obstruction, itchy, watery eyes, and dark circles under the eyes (allergic shiners), among other symptoms. Treatment is usually medical. Topical nasal sprays (steroids or antihistamines), or oral allergy medications may provide relief. Allergy testing and shots may be helpful as well. Surgery may be offered to relieve certain symptoms, such as nasal obstruction, but will not treat the underlying cause.