AbstractCurrently, categorization based on cluster analysis by objectively grasping the diversity of pathology is being conducted and the diversity of asthma is being categorized as phenotypes. Clinically, there is categorization based on aging and on allergic diathesis which is clinically useful; however, it has not, up to now, come to the point of selection based on phenotype. Subsequently, what is desired is the establishment of phenotype categorization for the purpose of materialization of treatment strategy which corresponds to individual cases. This study elaborates on order‐made medicine while considering phenotype.