Children reach developmental milestones in how they play, move, talk, and act. The predicted ages for the milestones can be ...

Carlo Valerio Bellieni does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...

Tanner stages are a tool used by healthcare providers to evaluate development in puberty. They detail five specific stages of physical change in puberty, including genital, breast, and pubic hair ...