This morning we talked about hypersensitivity pneumonitis- also referred to as extrinsic allergic alveolitis.
This condition is an immunologic reaction of lung parenchyma to an inhaled agent, particularly an organic antigen. HP has been identified in various groups including farmers, bird handlers, carpenters, and those exposed to various industrial dusts. Mold exposure in poor housing can cause HP.
HP can present acutely with abrupt onset of fever, cough, dyspnea, and diffuse fine crackles. CXR may be normal or show transient patchy opacities. Subacute HP presents with gradual development of productive cough, dyspnea, fatigue, anorexia, and weight loss. Respiratory symptoms are more severe than with acute HP, and radiographic findings more extensive.
Removal from exposure to the inciting antigen leads to improvement in symptoms.
* Many adults and children suffer from chronic cough and respiratory symptoms secondary to mold exposure in poor housing in the Northern Ontario Cree community of Attawapiskat.
Here is the CBC photo gallery of the Attawapiskat Housing Crisit.
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