In autism spectrum disorder, which of the following is a red flag in early development?

In autism spectrum disorder, which of the following is a red flag in early development?

• A. Rapid language development
• B. Loss of any language or social skills at any age
• C. Typical eye contact by 9 months
• D. Secure attachment

Answer: (B)

Loss of previously acquired language or social skills at any age is a red flag for autism because regression points to a disruption in typical neurodevelopment rather than steady, expected progression. When a child who once spoke or engaged with others begins to lose those abilities, it signals underlying changes in neural pathways governing communication and social interaction. This pattern, especially when it occurs after a period of normal development, prompts earlier evaluation for autism and access to interventions that can improve outcomes. Other signs listed do not carry the same implication. Rapid language development is not a warning sign for autism, and typical eye contact by 9 months plus secure attachment are reassuring milestones, not indicators of regression or autism risk.

Loss of previously acquired language or social skills at any age is a red flag for autism because regression points to a disruption in typical neurodevelopment rather than steady, expected progression. When a child who once spoke or engaged with others begins to lose those abilities, it signals underlying changes in neural pathways governing communication and social interaction. This pattern, especially when it occurs after a period of normal development, prompts earlier evaluation for autism and access to interventions that can improve outcomes.

Other signs listed do not carry the same implication. Rapid language development is not a warning sign for autism, and typical eye contact by 9 months plus secure attachment are reassuring milestones, not indicators of regression or autism risk.