| Re: Bronchial Spasm
If he had some kind of reaction to the bleach exposure it's remotely possible that it triggered an asthma attack. Regardless of what the initial trigger was, asthma isn't caused by a single event. Most researchers believe that a combination of genetic and environmental factors lead to some people having airways that are more prone to getting inflamed when they're exposed to allergens, exercise or a variety of other possible triggers.
Asthma can't be "cured" but most people's asthma can be managed with medications (and some children who have asthma seem to outgrow it).
The best thing you can do for your son is to get him to a pulmonologist for testing and to develop an asthma management plan. For Exercised Induced Asthma treatment can be as simple as using an Albuterol inhaler 20 minutes before his practices or games to help keep his airways open and avoid the coughing and chest tightness.
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