Sometimes things that seem off to parents about their child's behavior are developmentally appropriate. Find out what's typical, and when it's time to get help.

Childhood disintegrative disorder (CDD) occurs when a child regresses in multiple areas of functioning after about 2 years of typical development. It is part of autism spectrum disorder (ASD).

If a child is still babbling at 2 years old and has not started using words, it may be a sign of a speech delay. However, some babbling that accompanies words and gestures may be part of their typical ...

Developmental delays can affect a child’s physical, cognitive, communication, social, emotional, or behavioral skills. Often, delays affect more than one area of development. When a child has delays ...