Perennial Allergic Rhinitis In Pediatric Subjects

Inclusion Criteria: * Children with perennial allergic rhinitis. * Giving informed consent. * Children with a positive response to specific IgE antibody test. * Children assessed as positive in the nasal eosinophil count. * Children whose severity score of nasal symptom is 4 or higher. Exclusion criteria: * have a history of drug hypersensitivity. * are pregnant, lactating or possibly pregnant female children. * Sensitivity to pollen as a duplicate allergen and whose treatment periods are thought in the pollen dispersion periods. * have vasomotor rhinitis and eosinophilic rhinitis. * have asthma that requires the treatment with corticosteroid. * have inappropriate complication of nasal disorder that may influence on the evaluation of the study drugs. * have complicated with atopic dermatitis or urticaria that requires the treatment with antihistamine preparation. * have started specific desensitization treatment. * nonspecific modulation treatment but who have not reached the maintenance level of treatment. * have received surgical treatment for reduction and modulation of nasal mucosa. * redintegration therapy of nasal cavity to improve the degree of nasal airway. * surgical operation to improve rhinorrhea.