What does developmental regression mean?

• A. A temporary plateau in skill acquisition that recovers quickly.
• B. The loss of developmental milestones.
• C. Rapid growth of milestones.
• D. An increase in cognitive abilities beyond average.

Answer: (B)

Developmental regression means losing milestones that were previously achieved. It’s not just a temporary pause or a slower pace of development, and it’s not about gaining new skills or increasing cognitive abilities. The defining idea is that skills once present (like talking, walking, or social interactions) deteriorate or disappear, which is a red flag requiring prompt medical or developmental evaluation to identify underlying causes.