Patterns of allergic rhinitis among adults in Qassim region, Saudi Arabia: a cross sectional study.

Introduction: developing and developed countries have a high prevalence of allergic rhinitis (AR). Severe AR has negative impacts on sleep, quality of life, and work performance. The study aimed to identify the patterns of AR among patients attending the ears nose and throat Unit (ENT) clinic at King Saud Hospital, Qassim, Saudi Arabia.