Infections - Respiratory infections frequently trigger severe episodes of asthma. Allergies - Many children have allergies that trigger their asthma. Allergies may also be the cause of unrecognized or hidden asthma that is more difficult to diagnose. Irritants - Cigarette smoke, air pollution, strong odors, aerosol sprays and paint fumes are some of the substances that irritate the lungs and upper airways. Weather - Climate may play a role in triggering asthma.
Pulmonary studies demonstrate that breathing cold air provokes asthma.
A child's asthma might only be noticeable after crying, laughing or yelling in response to an emotional situation, where deep rapid breathing can trigger asthma. Along with the parents, a child's primary care provider is in the best position to help a child develop good asthma management habits and keep the condition under control. Asthma attacks may start suddenly. Or they may take a long time, even days, to develop. A peak flow meter can help you when your asthma is getting worse, and may show changes before you feel them.