Safety and Efficacy of Olopatadine 0.6% and Azelastine 137 Mcg in Vasomotor Rhinitis

Inclusion Criteria: * Diagnosis of VMR with at least 2 years of chronic non-allergic rhinitis * Negative skin tests to a panel of allergens and positive histamine test within last 2 years * History of symptoms related to defined VMR triggers Exclusion Criteria: * Nasal disorder, surgery, or concurrent disease that could interfere with evaluation of study medications * Bacterial or viral infection within 14 days of first visit. Diagnosis of acute sinusitis within 30 days of first visit * Chronic use of drugs that can cause rhinitis