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If you have a harmless heart murmur, more commonly known as an innocent heart murmur, you likely won't have any other signs or symptoms. An abnormal heart murmur may cause no obvious other signs or symptoms, aside from the unusual sound your doctor hears when listening to your heart with a stethoscope. But if you have these signs or symptoms, they may indicate a heart problem: Skin that appears blue, especially on your fingertips and lips.
A heart murmur is a sound made by turbulent blood flow within the heart. Your doctor hears this sound with a stethoscope. A murmur can occur in a normal heart. Or it may indicate some problem within the heart. Most often, the turbulence is normal. And the sound is called a benign flow murmur.