Asthma is a chronic, variable bronchial disease in time, sometimes over short periods. the follow-up must be based on the regular evaluation of control. this represents the respiratory health during last weeks, between the two last consultations. it is a composite score which takes into account clinical and functional parameters, as well as the consumption of beta2-mimetics of immediate action. recommendations have been just published by the anaes, defining the importance of respiratory functional testing in the follow-up of asthmatics, and proposing a gradation in the therapeutic adaptation to each consultation according to the levels of control and requirement that the patient and his doctor have defined together.