The asthma diagnosis comes from a series of tests. In many cases, a doctor will be able to determine if a patient has asthma and diagnose them right on the spot. In these cases, the diagnosis will be determined by the patient's pre history. The doctor will look at the patient's history of illness as well as his family history to determine if the symptoms and signs there are likely to be that of asthma. In addition, most doctors will use a simple examination to confirm their diagnosis of the asthma condition.

When an adult is to be diagnosed with asthma, the doctor may take some measurements of his airways. In asthma, the airways will constrict tightly, not allowing enough air to pass through them. This is a test that offers diagnosis of the condition, but can not be done on children. The doctor will use what is called a peak flow meter to help test and then diagnosis the adult asthma patient. In addition to it using an inhaler to test the benefits it offers to the potential asthma patient. For children to be diagnosed with asthma, the doctor will look at his medical history. Then, to insure that the patient does have asthma, he or she will monitor the child's response to various inhalers using bronchodilator medications.

In many cases, a doctor will diagnosis asthma within a matter of minutes due simple to the conditions that the patient is facing. Those that are facing asthma symptoms will usually be able to be diagnosed based on the conditions in which they face asthma like reactions. Doctors often can diagnosis a patient within a matter of minutes just by knowing the various factors that cause the body to react. In these cases, the final test comes from testing medications on the potential asthma sufferer to see if they do in fact relieve the condition.