If you have heart failure, your heart can't supply enough blood to meet your body's needs.

Symptoms may develop slowly. Sometimes, heart failure symptoms start suddenly. Heart failure symptoms may include:

• Shortness of breath with activity or when lying down.
• Fatigue and weakness.
• Swelling in the legs, ankles and feet.
• Rapid or irregular heartbeat.
• Reduced ability to exercise.
• Wheezing.
• A cough that doesn't go away or a cough that brings up white or pink mucus with spots of blood.
• Swelling of the belly area.
• Very rapid weight gain from fluid buildup.
• Nausea and lack of appetite.
• Difficulty concentrating or decreased alertness.
• Chest pain if heart failure is caused by a heart attack.