Hi, I have a 18 month old little boy whose ribs click, both his dad and I have felt it quite regularly. It doesn't bother him at all and there are no signs of injury. They've been like that for as long as I can rememeber. They do seem abit worse which is now making me worry slighty as I would have thought as he got older. I have two other children 3 and 6 who have never had this. Has anyone else experienced this?