• asthma

A common chronic inflammatory disease of the airways that is characterized by variable and recurring symptoms, reversible airflow obstruction, and bronchospasm Common symptoms include wheezing, coughing and shortness of breath that is three famous name.

It is thought that asthma is a combination of genetic factors and environmental factors caused the diagnosis is usually based on the pattern of symptoms, response to therapy over time, and spirometry as the disease is clinically classified according to frequency of symptoms, forced expiratory volume in one second (FEV1) and peak expiratory flow rate] asthma may also atopic (extrinsic) or non-atopic (intrinsic) be classified in atopy refers to a tendency to develop type 1 hypersensitivity reactions.