The present invention is directed to methods of treating nasal and/or ophthalmic diseases, symptoms, or disorders that are therapeutically responsive to corticosteroid therapy by delivering aqueous solution formulations comprising a corticosteroid to nasal and ophthalmic tissues. The invention is also directed to methods, systems, devices, and compositions for delivering aqueous solution formulations comprising a corticosteroid and an antihistamine to nasal and ophthalmic tissues. watering eyes