Occupational Asthma: Causes and symptoms
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More about Occupational Asthma:
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More than 240 causes of occupational asthma have been identified. Even short-term exposure to low levels of one or more irritating substances can cause a very sensitive person to develop symptoms of occupational asthma. A person who has occupational asthma has one or more symptoms, including coughing, shortness of breath, tightness in the chest, and wheezing. Symptoms may appear less than 24 hours after the person is first exposed to the irritant or develop two or three years later.
At first, symptoms appear while the person is at work or several hours after the end of the workday. Symptoms disappear or diminish when the person spends time away from the workplace and return or intensify when exposure is renewed.
As the condition becomes more advanced, symptoms sometimes occur even when the person is not in the workplace. Symptoms may also develop in response to minor sources of lung irritation.
— Maureen Haggerty
