Heart failure or chronic heart failure is a chronic medical condition in which the heart cannot pump out enough blood to the body due to the heart muscle weakness. It happens more often in the elderly, and is usually caused by one or more chronic diseases such as high blood pressure, ischemic heart disease, diabetes, etc.
Symptoms of the heart failure begin with the shortness of breath, malaise, palpitations and swelling (edema) in the feet/ankles, due to heart fails to press blood back to the heart. The blood stays in these parts longer causing edema or fluid retention in legs or lung, eventually in other organs as well. As it progress, there are cyanosis in hands/feet/face/, coughing or coughing blood (pink foamy mucus), and chest pain.
Please to go see your doctor for diagnosis and treatments if there are above symptoms, or any sign that concern you.