Asthma is a chronic inflammatory condition characterized by airway hyper-responsiveness to a variety of stimuli largely of allergic origin with reversible airflow limitation. The major clinical features of asthma are wheezing, shortness of breath, and cough. It is a major cause of impaired quality of life with impact on work and recreational as well as physical activities and emotions. The goal of treatment is to achieve overall clinical control, which entails the achievement of symptom-free control and to minimize future risks. The goal is the same for all severity of the disease.