What situations and substances may trigger attacks?
Dr. Farber: Parents need to pay careful attention to what their child is breathing both inside the home and outdoors. Common triggers include allergens such as pet dander, pollen, mold and dust, but also weather changes (especially chilly temperatures) and viral infections (colds and flu). If their asthma is not well controlled, some children can have asthma attacks when they exercise or get overexcited.