Some symptoms of heart damage include congested lungs; water and fluid retention; weakness, dizziness and fatigue; and irregular or rapid heartbeat, as MedicineNet indicates. These symptoms can be mild to severe, or there may be no symptoms. The symptoms relate to the changes that take place in the body and heart.
Fluid in the lungs can lead to shortness of breath when a person exercises or difficulties in breathing when lying in bed. Also, congestion in the lungs can lead to wheezing or a dry cough, explains MedicineNet.
Insufficient blood flow to the kidneys can lead to weight gain, retention of water in the body, and swollen abdomen, legs and ankles. During the night, the person may have an increased urge to urinate. The bloating in the stomach can lead to nausea and a loss of appetite, according to MedicineNet.
If the muscles and major organs of the body do not get enough blood, the person may feel weak and tired. For example, if the brain does not get enough blood, the person may become confused or feel dizzy, says MedicineNet.
If the heart is damaged, it may beat faster so that it can send enough blood to the major organs of the body. In such a case, the person may have an irregular or fast heartbeat, according to Medicine Net.