Domestic Environmental Exposure and Progression of ILD: An Exploratory Case-Control Study

Inclusion Criteria: * Patient aged over 18 years * Patient affected by one of the following interstitial lung diseases (ILDs): Idiopathic Pulmonary Fibrosis (IPF), Nonspecific Interstitial Pneumonia (NSIP), Pneumoconioses, ILDs associated with autoimmune features, Pleuroparenchymal Fibroelastosis (PPFE), Chronic Hypersensitivity Pneumonitis (CHP) whose etiology is not primarily related to the domestic environment, Stage 4 fibrosing sarcoidosis, unclassifiable ILDs. * ILD patient with progressive fibrosis over the past 12 months (case group) * ILD patient with non-progressive fibrosis over the past 12 months (control group) * Patients without reduction in the treatment of interstitial lung disease in the 12 months prior to inclusion, patients without treatment can be included * Matching "1 progressive fibrosis" / "2 non-progressive fibrosis": * Same ILD diagnosis * Use of antifibrotic treatment for both paired patients or absence of antifibrotic treatment for both paired patients * Both patients should preferably be matched within 3 months to limit significant contrasts in lifestyle and housing use related to the season * Patient who has received information about the protocol and does not object to participating * Patient affiliated with or beneficiary of a social security scheme or universal health coverage Exclusion Criteria: * Patient who has already received advice from a CMEI (Environmental and Occupational Medicine Consultation Center) in the past 12 months * Patient who has recently moved into their home (less than 1 year) * Patient living less than 6 months per year in the home to be investigated * Patient followed in psychiatry for a severe condition * Patient who does not speak French and is not accompanied by a person who shares their home and speaks French to act as a translator * Patient refusing to consent to participate in the research * Patient not living in Île-de-France * Patient with non-chronic Hypersensitivity Pneumonitis related to the domestic environment * Patient with sarcoidosis (except stage 4 fibrosing sarcoidosis) * Adult patient under legal protection and unable to give consent