Forty patients with seasonal rhinitis and a proven sensitivity to pollens were studied for 2 weeks during the pollen season of 1982. The study was carried out according to a double-blind, double-dummy design. All patients received 100 micrograms beclomethasone dipropionate (BDP) into each nostril twice daily (400 micrograms/day) on a randomized basis, from either the aqueous nasal spray or the pressurized nasal spray (Beconase Nasal Spray). Analysis of patients' symptom scores, additional symptomatic medication and physicians' assessment indicated that both treatments were equally effective in controlling the symptoms of seasonal rhinitis. Any adverse events reported were considered to be clinically insignificant. BDP aqueous nasal spray was therefore found to be an effective and acceptable therapy in the management of seasonal rhinitis.