MSD Manual

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Disorders Similar to Occupational Asthma

Disorders Similar to Occupational Asthma



Reactive airways dysfunction syndrome (RADS)

It can occur in people with no history of allergies or asthma.

Airway blockage occurs after overexposure to irritating dust, gas, or fumes.

Symptoms resemble those of asthma.

Reactive upper airways syndrome

Irritation of the lining of the nose and the throat occurs after either sudden or long-term exposure to irritants.

People develop symptoms such as a runny nose and burning of the nose and throat.

Irritant-associated vocal cord dysfunction

Abnormal closure of the vocal cords occurs after a person inhales an irritant.

People may gasp or make whistling sounds when inhaling and have hoarseness or trouble speaking.

Industrial bronchitis (irritant-induced chronic bronchitis)

After sudden or long-term irritant inhalation, cough and often difficulty breathing develop and tend to progressively increase.

Bronchiolitis obliterans

The small airways (bronchioles) are damaged when a person inhales a gas.

Cough and difficulty breathing tend to develop and progressively increase.