Overview
Breathing is often worse lying flat and better sitting up.
Pink, frothy spit is a serious sign.
Symptoms
Common signs:
- Severe shortness of breath
Less common
- Worse lying flat
- Pink frothy cough
- Swollen legs
When to get medical care
Causes
Heart failure, kidney failure, altitude.
Does it spread or run in families?
- It isn't contagious. You can't catch it from someone else.
Who is more likely to get it
- Heart disease
- Kidney disease
Possible complications
Diagnosis
Doctors check oxygen and the heart.
The exam
Lung and heart exam.
Tests
Tests, if needed:
- Chest X-ray:
- Echocardiogram:
- BNP blood test:
Treatment
Get help now.
Self-care
- Sit upright while waiting for help
- Long-term: take heart medicines, weigh daily, limit salt
Medicines
Medicines that may help:
| Medicine | Helps with | Good to know |
|---|---|---|
| Water pills | Removing fluid | Prescription. |
OwieClear doesn't give doses: follow the label or your healthcare professional. Medicine names here are examples, not a full list.
Oxygen, water pills, and treating the cause.
Prevention
To lower risk:
- Take heart medicines
- Limit salt
Which doctor treats this
- Emergency doctors treat it first, in the ER.
- They may send you to a pulmonologist (lung doctor).
Living with it
Support groups and helplines
- American Lung Association: Lung HelpLine 1-800-586-4872 and Better Breathers support groups.
Back to school, work, or sports
- Recovery time varies. Ask your care team when you can drive, lift, work, and exercise.
Pregnancy and breastfeeding
- If you're pregnant or planning to be, tell your prenatal provider about this condition.
- Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
- Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
- Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.
For caregivers
- Go to visits when you can and take notes.
- Keep a list of medicines, allergies, and doctors in one place.
- Learn the warning signs that need fast care.
- Learn CPR. Many hospitals and the Red Cross offer classes.
- Take breaks and ask for help. Caregivers need care too.
Outlook
Treatable when caught fast.
Research studies
Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.
Search ClinicalTrials.gov for studies on Fluid in the lungs (pulmonary edema)
Sources
Last updated 2026-11-12.