Asthma is a serious global health problem. People of all ages in countries throughout the world are affected by this chronic airway disorder that can be severe and sometimes fatal. The prevalence of asthma is increasing everywhere, especially among children.According to international guidelines, once control of asthma is achieved and maintained for at least 3 months, a gradual reduction of the maintenance therapy should be tried in order to identify the minimum therapy required to maintain control. This will help reduce the risk of side effects and enhance patient adherence to the treatment plan.