The effect of prophylactic treatment by cetirizine hydrochloride in patients with Japanese cedar pollinosis

Abstract

The clinical effect of cetirizine hydrochloride on Japanese cedar pollen allergy patients was analyzed by comparing treatment before the start of the pollen season and treatment after the pollen had been scattered. 1. Based on the symptom-medication score method, treatment before the pollen season shows a significantly lower value than that of treatment within one or two weeks after the pollen had been scattered. 2. Analysis also revealed that this medication relieved nasal symptoms, even in cases, occurring after the season had started. 3. Cetirizine hydrochloride was an effective initial treatment for the clinical effects of Japanese cedar pollen allergic reactions. These results suggest that cetirizine hydrochloride is useful for the treatment of Japanese cedar pollinosis.