Palliation of Dyspnea With Morphine in Patients With Interstitial Lung Disease

Inclusion Criteria: * A diagnosis of interstitial lung disease (IPF, NSIP, RA-ILS, Scl-ILS, MCTD-ILS, asbestous, drug induced ILD, unclassified ILD) * Dyspnea corresponding to Medial Research Councils (MRC) dyspnea score ≥ 3 * Written consent * Age ≥ 18 years * Competent * For fertile women: Negative pregnancy test * For fertile and sexually active participants: Use of safe anti-conceptionals Exclusion Criteria: * Ongoing infection * Decreased lung function to a degree which makes any form of respiratory depression life threatening * Treatment with morphine or morphine analogues * Allergy towards morphine hydrochloride