People with Heart Failure often have trouble breathing during activity, as well as when at rest, including when lying down to go to sleep. This is caused by blood backing up and fluid leaking into the lungs.

People with Heart Failure often complain of having swollen feet, legs, ankles, and even stomachs. This particularly bothersome symptom occurs when blood backs up and fluid collects in the tissues.

A nagging cough, often followed by white or pink mucus, occurs when fluid backs up into the lungs.

When the heart isn’t working correctly, the brain may not be getting the blood it needs to function properly. For this reason, people with Heart Failure often experience episodes of confusion.

Gaining sudden weight—for example, 3 or more pounds in a single day—is generally a sign of fluid retention. If you have Heart Failure and notice this symptom, call the doctor right away.

When the heart isn’t able to pump out enough blood, the body sends it to the most critical organs first. This means that arm and leg muscles may not receive enough oxygen- and nutrient-rich blood, which can make them feel weaker. As a result, everyday tasks such as walking or climbing stairs can feel exhausting.