Hypersensitivity pneumonitis or farmer’s lung is an allergic condition where you may be allergic to inhaled dust particles, and cause alveoli or air sacs to become inflamed. The allergen may be mold, bird droppings or fungus spores. The most common type of hypersensitivity pneumonitis is called farmer’s lung which is due to exposure to hay, mold and grain.
Repeated exposure to allergens can cause a reaction that occurs at a cellular level. This is cell-mediated hypersensitivity. Increased white blood cells may be seen in the lung. This can lead to inflammation of small airways and alveoli. This causes difficulty in breathing and hypersensitivity pneumonitis.
Can be acute, sub acute or chronic.
Sub acute form
|Posted By : Dr. Sunitha, NJ, USA
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