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A 25-year-old female asked:

How common is adult onset asthma? nonsmoker

1 doctor answer1 doctor weighed in
Dr. John Chiu
Allergy and Immunology 58 years experience
Not uncommon: Although it was believed that asthma could only start in childhood and in the 60's no one could have allergic asthma developing after age 40, it is clear now that asthma can indeed occur in adulthood. Based on my experience, I estimate that about 25% of the asthma cases develop during adulthood.

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Last updated Jan 13, 2017

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