human
My doctor says I have a heart murmur, but I don't feel any different. What is a heart murmur?
assistant
A heart murmur is a sound that can be heard when the heart valves are not closing properly. This can happen for many reasons, including an infection or inflammation in the heart muscle, damage to the valves themselves, or even a genetic condition. The sound is usually described as a “whooshing” or “lubb-dub” type of noise. It's important to see your doctor if you hear this noise, because it could indicate a more serious problem with your heart.