Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs Pulmonary edemaUpdated: 2017-06-13OverviewPulmonary edema is usually caused by heart conditions. Pneumonia, exposure to certain toxins and drugs, and being at high elevations are other causes. SymptomsDepending on the cause, pulmonary edema symptoms may appear suddenly or develop over time. Mild to extreme breathing difficulty occurs. Cough, chest pain, and fatigue are other symptoms. TreatmentsTreatment generally includes supplemental oxygen and medications. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use