Hypersensitivity Pneumonitis Make an Appointment Find a Doctor Ask a Question Reviewed by Cecile S. Rose, MD, MPH (June 01, 2012) Hypersensitivity pneumonitis (HP) is an inflammation of the lungs caused by inhaling a foreign substance. These foreign substances can stimulate an immune reaction in the small airways and air sacs of the lung. This may lead to acute lung disease. Over time and with continued exposure to the causative substance, long-lasting (chronic) lung disease with permanent scarring can occur. Programs & Services Deployment-Related Lung Disease Center Clinical Trials For more than 100 years, National Jewish Health has been committed to finding new treatments and cures for diseases. Search our clinical trials. Can Investigational Medication Benefit FHP Patients? Coronavirus Precautions × If you are a National Jewish Health patient coming for a visit and are experiencing fever, new or increased cough, new or increased shortness of breath, sore throat, persistent nausea/vomiting, diarrhea or abdominal pain, please contact us before arrival at National Jewish Health so we can care for you in the appropriate setting. Call 303.398.1355. If you have an emergency, call 9-1-1. All patients and visitors will be verbally screened upon arrival for symptoms and/or exposure to the new coronavirus, COVID-19. If needed, swab tests will be administered to National Jewish Health patients only. For the safety of our patients and staff, the number of visitors will be limited to one per patient. Thank you for your cooperation. Coronavirus Information & Resources Close
Reviewed by Cecile S. Rose, MD, MPH (June 01, 2012) Hypersensitivity pneumonitis (HP) is an inflammation of the lungs caused by inhaling a foreign substance. These foreign substances can stimulate an immune reaction in the small airways and air sacs of the lung. This may lead to acute lung disease. Over time and with continued exposure to the causative substance, long-lasting (chronic) lung disease with permanent scarring can occur.