A member asked:

How is asthma normally diagnosed? is there any medical tests required?

A doctor has provided 1 answer
Dr. John Chiu answered

Yes: Usually a lung function test is required often following by observing whether there is a bronchodilator response if airway narrowing was found in the test . On other occasions, a challenge with exercise, inhaled methacholine/mannitol, or cold air may be considered.

Answered 4/11/2014

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