How is asthma diagnosed?

Asthma is diagnosed through a combination of clinical and laboratory tools. Typically, a diagnosis is formed from a combination of patient history, a physical examination of the lungs using a stethoscope, and lung function tests (e.g., spirometry, peak expiratory flow, and response to an inhaler).^[1] Since allergens can provoke immune responses that worsen the symptoms of asthma, clinicians may also do allergy tests.