The most common symptoms of heart failure include shortness of breath or difficulty breathing, feeling tired, and swelling. Swelling usually occurs in the ankles, feet, legs, and sometimes in the abdomen.
Swelling is caused by fluid buildup in the body. The fluid buildup can lead to weight gain as well as a cough. The cough can be worse at night and when lying down.
When symptoms first begin, you might feel tired or short of breath after routine physical activities, such as climbing stairs. As heart failure progresses, the symptoms get worse. You may feel tired or short of breath after performing simple activities, like getting dressed.