While about 75 percent of kids experience a heart murmur during childhood, most of these murmurs are considered normal and may eventually go away on their own. Sometimes murmurs come and go.
About 75 percent of children will have a heart murmur at some point in their life, but many of these will be no cause for concern and may eventually go away on their own.
Heart murmurs in children are very common and aren’t usually cause for concern. A normal heart makes a specific sound when the heart valves close as the heart pushes blood through the body. A murmur is the sound of blood flow through the heart.