Asthma

Asthma is a common disease effecting the respiratory system, and its prevalence has increased significantly over the last 30 years. It is estimated that as many as 300 million people globally are affected by asthma, and it is responsible for around 250,000 deaths a year.

Asthma is characterized by recurring symptoms including wheezing, coughing, chest tightness, and shortness of breathe. These symptoms are variable, and they may differ from person to person. There are different classifications of asthma, which are intermittent, mild persistent, moderate persistent and severe persistent. Diagnosis and classification is based on the symptoms present and their frequency, as well as the patients response to therapy.