The most common symptom of anemia is fatigue (feeling tired or weak). If you have anemia, it may seem hard to find the energy to do normal activities.
Other signs and symptoms of anemia include:
These signs and symptoms can occur because your heart has to work harder to pump more oxygen-rich blood through your body.
Mild to moderate anemia may cause very mild symptoms or none at all.
Complications of Anemia
Some people who have anemia may have arrhythmias (ah-RITH-me-ahs). An arrhythmia is a problem with the rate or rhythm of the heartbeat. Over time, arrhythmias can damage your heart and possibly lead to heart failure. Anemia also can damage other organs in your body because your blood can’t get enough oxygen to them.
Anemia can weaken people who have cancer or HIV/AIDS. This can make their treatments not work as well.
Anemia also can cause many other medical problems. People who have kidney disease and anemia are more likely to have heart problems. In some types of anemia, too little fluid intake or too much loss of fluid in the blood and body can occur. Severe loss of fluid can be life threatening.