An innocent or functional murmur is a term used to describe a common sound in a normal heart. It is simply a sound vibration - like the bass sound on loud music. All children may have these sounds at one time or another.
There are no negative effects and no symptoms associated with an innocent murmur. The heart is completely normal and functions well.
Innocent murmurs can be heard with a stethoscope during a physical examination. Sometimes this murmur can be heard, other times, it cannot. It is more likely to be heard when a child has a fever and the heart is beating more quickly. As children grow, it can become less easy to hear.
There is no need to treat or visit a heart specialist for an innocent murmur.
You do not need to tell the dentist. There is also no need to report it on school forms or write it on insurance forms.