**Question:** Foetal alcohol syndrome comprises of

A. Growth retardation
B. Psychomotor retardation
C. Central nervous system abnormalities
D. Facial dysmorphism

**Correct Answer:** D. Facial dysmorphism

**Core Concept:**
Foetal Alcohol Spectrum Disorders (FASDs) are a group of developmental disabilities that occur in infants and children whose mothers consumed alcohol during pregnancy. These disorders can lead to a range of physical, cognitive, and behavioral problems. Alcohol crosses the placenta easily, affecting the developing fetus.

**Why the Correct Answer is Right:**
Facial dysmorphism is the hallmark feature of foetal alcohol syndrome (FAS), which is one of the subtypes of FASDs. Alcohol exposure during pregnancy can lead to abnormal facial features such as small palpebral fissures, thin upper lip, and a short, broad nose. These physical abnormalities are a result of the interference of alcohol with normal facial development and are present in more than 50% of cases with FAS.

**Why Each Wrong Option is Incorrect:**
A. Growth retardation (Option A) is a feature of foetal alcohol effects (FAE) and is not specific to foetal alcohol syndrome. FAE is a broad category that includes developmental delays and growth problems.

B. Psychomotor retardation (Option B) is a feature of foetal alcohol effects (FAE) and not a specific feature of foetal alcohol syndrome (FAS). FAE encompasses developmental delays, motor problems, and cognitive impairments.

C. Central nervous system abnormalities (Option C) are a part of foetal alcohol effects (FAE) and not specific to foetal alcohol syndrome (FAS). FAE includes neurological problems like seizures, tremors, and cognitive impairments.

**Clinical Pearl:**
Alcohol exposure during pregnancy can lead to a range of developmental problems in children, but the combination of characteristic facial dysmorphism, growth retardation, and central nervous system abnormalities is specific to the foetal alcohol syndrome (FAS). Although FAE is more common than FAS, recognizing the specific features of FAS is crucial for making a proper diagnosis and providing appropriate care for affected infants and children. Familiarizing yourself with these features can help in avoiding misdiagnosis, which is crucial in guiding treatment and care for these children.