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People who have a family history of asthma, hay fever, eczema or allergies are more likely to develop asthma. However it is possible for people to develop asthma who do not have any family connection with asthma or allergy.
It can occur in adults who have had a viral infection or who have been exposed to irritants at work.
In adulthood, asthma is more common in women than men.
Childhood is the most common age of onset but asthma can begin at any age!
