Asthma is characterized by a disturbance of breathing rhythm. The disturbance is marked by airways obstruction with usually greater relative obstruction of out breathing with a prolongation of the expiratory phase. There is a well established tendency for asthmatic attacks to come on in the early hours of the morning. The homoeopathic material medica specifies different remedies for different hours ie Nat. Sulph; Kali carb; etc. This paper reveals that to treat asthma successfully one must have absolute confidence in the treatment that one uses, and that one should use a new treatment whilst it still works. The danger of this approach lies in the consequence that the anxiety ridden sufferer is most dependent on the physician and treatment.