Developmental Delay is when your child does not reach their developmental milestones at the expected times. ... If your child is temporarily lagging behind, that is not called developmental delay. Delay can occur in one or many areas—for example, gross or fine motor, language, social, or thinking skills.
Some of the most common symptoms can include: Learning and developing more slowly than other children same age. Rolling over, sitting up, crawling, or walking much later than developmentally appropriate. Difficulty communicating or socializing with others.