POPULAR (Preference Of Patient Using Levocetirizine in Allergic Rhinitis)

Inclusion Criteria: * Clinical history of SAR known and treated since 2 years. * Positive skin prick test (wheal \> 3 mm larger than the diluent control) or RAST (≥3.5 IU/ml) to grass pollen (less than 1 year). * Minimum mean T5SS of 8 during the baseline period. Exclusion Criteria: * Have an associated asthma requiring a daily treatment other than β2 short acting agonist prn * Have atopic dermatitis or urticaria requiring antihistamine treatment or the administration of oral or topical corticosteroids and any other disease requiring the administration of oral or topical corticosteroids