Asthma is the most common chronic disease of childhood and the most common cause of admission of children to the hospital. Children in Saudi Arabia have a relatively high prevalence of asthma compared to many other countries for reasons that are not clear. The prevalence has increased during the past 20 years2 following, and sometimes exceeding, the same pattern noted in Western countries one decade ago. As stated earlier about 5.7% of all ER asthma visits are because of asthma exacerbation and about 8% of those children gets admitted to the hospital.