What is a significant milestone you would be concerned about if a child is 13-24 months old?

Concern about a child losing skills they have previously acquired is significant because this can indicate an underlying issue with their development. Typically, children in the 13-24 month age range are expected to build on their skills, demonstrating growth in areas such as mobility, language, and social interaction. Losing previously mastered skills, known as regression, could suggest developmental delays, neurological problems, or other health concerns that may require further evaluation and intervention.

In contrast, while being able to walk by 18 months, speaking at least six words, and following simple instructions are important milestones, these represent expected achievements by this age rather than concerns when not met. If a child is not progressing forward or is losing previously gained abilities, that raises a red flag for parents and caregivers, indicating the need for a thorough assessment to ensure the child receives appropriate support and resources.