Which feature is NOT part of the CLASIC triad for fetal alcohol syndrome?

Which feature is NOT part of the CLASIC triad for fetal alcohol syndrome?

• A. Microcephaly
• B. Smooth philtrum
• C. Short palpebral fissures
• D. Hyperpigmentation of tongue

Answer: (D)

Recognizing fetal alcohol syndrome relies on three hallmark signs that reflect disruptions in fetal brain and facial development: microcephaly, a smooth philtrum, and short palpebral fissures. When these features appear together, they strongly point to FAS within the CLASIC framework. Tongue hyperpigmentation is not described as part of this triad and isn’t a characteristic sign used to diagnose FAS in this context. Therefore, the feature that does not fit the CLASIC triad is tongue hyperpigmentation.

Recognizing fetal alcohol syndrome relies on three hallmark signs that reflect disruptions in fetal brain and facial development: microcephaly, a smooth philtrum, and short palpebral fissures. When these features appear together, they strongly point to FAS within the CLASIC framework. Tongue hyperpigmentation is not described as part of this triad and isn’t a characteristic sign used to diagnose FAS in this context. Therefore, the feature that does not fit the CLASIC triad is tongue hyperpigmentation.