(HealthDay News) -- A heart murmur is an extra or unusual sound made by the heart as it beats.
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The U.S. National Heart, Lung, and Blood Institute says some cases have no obvious warning signs. In other cases, symptoms may include:
- Feeling short of breath.
- Sweating excessively, despite little physical activity.
- Having chest pain or a chronic cough.
- Fainting or feeling dizzy.
- Having a blue tint to the skin.
- Suddenly gaining weight or swelling.
- Having an enlarged liver or enlarged neck veins.
- Among infants, showing poor development or lack of appetite.
-- Diana Kohnle
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