Airways of people with asthma are often chronically inflamed (swollen). Therefore, the airways are sensitive to things that make asthma worse. These, either singly or together, cause symptoms in people with asthma. Identifying and controlling or treating things that make asthma worse, is essential to good asthma management. Things that make asthma worse include: irritants, allergens, infections, weather, exercise, emotions, gastroesophageal reflux and hormonal changes. These vary from person to person.

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