hypersensitivity pneumonitis
- hypersensitivity pneumonitis
- a respiratory hypersensitivity reaction to repeated inhalation of organic particles, usually in an occupational setting, with onset a few hours after exposure to the allergen. Characteristics include fever, fatigue, chills, unproductive cough, tachycardia, and tachypnea; in the chronic form there is interstitial fibrosis with collagenous thickening of the alveolar septa. There are many specific types (see table). Called also allergic or extrinsic allergic alveolitis.
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Hypersensitivity pneumonitis — Classification and external resources Micrograph of hypersensitivity pneumonitis. Lung biopsy. Trichrome stain … Wikipedia
Pneumonitis — ) Bagassosis ** (ICD10|J|67|2|j|60) Bird fancier s lung ** (ICD10|J|67|3|j|60) Suberosis ** (ICD10|J|67|4|j|60) Maltworker s lung ** (ICD10|J|67|5|j|60) Mushroom worker s lung ** (ICD10|J|67|6|j|60) Maple bark stripper s lung **… … Wikipedia
pneumonitis — Inflammation of the lungs. SEE ALSO: pneumonia. SYN: pulmonitis. [G. pneumon, lung, + itis, inflammation] acute interstitial p. usually considered a form of hypersensitivity p.. hypersensitivity p … Medical dictionary
Chemical pneumonitis — Aspiration pneumonitis or chemical pneumonitis is inflammation of the lung caused by aspirating or inhaling irritants. [1] It is sometimes called a chemical pneumonia , though it is not infectious. There are two general types of chemical… … Wikipedia
Type IV hypersensitivity — Classification and external resources MeSH D006968 Type IV hypersensitivity is often called delayed type hypersensitivity as the reaction takes two to three days to develop. Unlike the other types, it is not antibody mediated but rather is a type … Wikipedia
allergic alveolitis — hypersensitivity pneumonitis … Medical dictionary
extrinsic allergic alveolitis — hypersensitivity pneumonitis … Medical dictionary
hot tub lung — hypersensitivity pneumonitis associated with indoor hot tub use, caused by inhalation of aerosolized Mycobacterium avium complex … Medical dictionary
humidifier lung — hypersensitivity pneumonitis caused by inhalation of air that has been passed through humidifiers, dehumidifiers, or air conditioners contaminated by any of a variety of fungi, amebas, or thermophilic actinomycetes. See also humidifier fever,… … Medical dictionary
malt worker's lung — hypersensitivity pneumonitis in brewery and distillery workers, a form of allergic aspergillosis caused by inhalation of barley dust containing spores of Aspergillus clavatus and A. fumigatus during the malting process … Medical dictionary
