What is hypersensitivity lung disease?

Hypersensitivity lung disease, also known as extrinsic allergic alveolitis, is a rare lung disease caused by an allergic reaction to inhaled antigens. These antigens can be found in a variety of sources, including:

* Organic dusts (such as mold, hay, and animal dander)

* Chemicals (such as isocyanates and epoxy resins)

* Metals (such as beryllium and cobalt)

When a person with hypersensitivity lung disease inhales one of these antigens, it triggers an inflammatory reaction in the lungs. This inflammation can cause a variety of symptoms, including:

* Cough

* Shortness of breath

* Wheezing

* Fatigue

* Fever

* Night sweats

* Weight loss

Hypersensitivity lung disease can range in severity from mild to severe. In some cases, it can even be fatal.

There is no cure for hypersensitivity lung disease, but it can be managed by avoiding exposure to the offending antigens. In some cases, medication may be prescribed to help relieve symptoms.