title: [Domestic hypersensitivity pneumonitis].
abstract: BACKGROUND
  Domestic hypersensitivity pneumonitis (HP) cases are relatively widespread, with an overall annual incidence of approximately 1/100,000 reported in a British study covering several million patients. All-causes mortality is three times higher within HP-affected patients than amongst the general population.
  
  
  BACKGROUND
  Cases of HP are usually diagnosed as 'farmer's lung' (FL) and 'bird fancier's lung' (BFL) diseases, however we suggest that other domestic causes, such as humidifier lung, hot tub pneumonitis, feather duvet and domestic exposure to moulds may be more frequent than widely suggested. Usually, the diagnosis is established on the basis of characteristic clinical, functional, radiological and broncho-alveolar lavage findings or recurrence of respiratory symptoms after returning home.
  
  
  CONCLUSIONS
  In the absence of a common cause (FL or BFL), physicians must have a high index of clinical suspicion and should consider an environmental antigen source. Detailed questioning of HP patients on their living conditions and, where appropriate, a home inspection conducted by an environmental health expert are necessary for identifying causative antigens.
  
  
  CONCLUSIONS
  The cornerstone of therapy is antigen avoidance.
authors.affiliation: Service de pneumologie, hôpital Gabriel-Montpied, CHU de Clermont-Ferrand, rue Montalembert, 63003 Clermont-Ferrand, France. dcaillaud@chu-clermontferrand.fr
authors.forename: D
authors.initials: D
authors.lastname: Caillaud
authors.forename: R
authors.initials: R
authors.lastname: Raobison
authors.forename: B
authors.initials: B
authors.lastname: Evrard
authors.forename: S
authors.initials: S
authors.lastname: Montcouquiol
authors.forename: K
authors.initials: K
authors.lastname: Horo
mesh_terms: D000485:Allergens / Q000276:immunology; D000542:Alveolitis, Extrinsic Allergic / Q000150:complications / Q000175:diagnosis* / Q000453:epidemiology / Q000276:immunology / Q000517:prevention & control; D000818:Animals; D001716:Bird Fancier's Lung / Q000175:diagnosis; D018893:Bronchoalveolar Lavage; D004781:Environmental Exposure / Q000009:adverse effects*; D019317:Evidence-Based Medicine; D005203:Farmer's Lung / Q000175:diagnosis; D005241:Feathers / Q000276:immunology; D005602:France / Q000453:epidemiology; D006798:Housing; D006801:Humans; D006113:United Kingdom / Q000453:epidemiology
chemical_list: D000485:Allergens