yup my 6 year old has one. so now he is going to a pediatric cardiologist. not sure if i spelled it right but he will be going to one soon. to make sure everything is ok. dr said it was a loud whooshing sound. and yes i know alot of younger HEALTHY kids get them and it's harmless. but it can also be something serious. untill he goes in i shall be calm. he was a little mad bc he thought he wasn't going to be able to play football. but his dr said yeah he'll be fine. so now he's all excited.