Which feature is commonly associated with Down's syndrome in a neonate?

Which feature is commonly associated with Down's syndrome in a neonate?

• A. Large ears, small mouth, short fingers, and jaundice
• B. Small ears, short neck, hypotonia
• C. Flat nasal bridge and normocephaly
• D. Protuberant tongue, microcephaly, and jaundice

Answer: (B)

Neonatal Down syndrome most often presents with low muscle tone together with distinctive craniofacial/neck features. The hallmark is hypotonia, which leads to weak suck and feeding challenges in the newborn. Alongside this, a relatively short neck and small ears are commonly seen, reflecting the characteristic appearance associated with trisomy 21. This combination—hypotonia plus a short neck and small ears—best fits the typical newborn presentation of Down syndrome. Other options may include features that are less specific or not as consistently observed in newborns with trisomy 21, such as normal head shape with a flat nasal bridge, very large ears, or microcephaly with jaundice. While some of these can occur, they don’t align as closely with the common neonatal pattern as the trio of hypotonia, short neck, and small ears.

Neonatal Down syndrome most often presents with low muscle tone together with distinctive craniofacial/neck features. The hallmark is hypotonia, which leads to weak suck and feeding challenges in the newborn. Alongside this, a relatively short neck and small ears are commonly seen, reflecting the characteristic appearance associated with trisomy 21. This combination—hypotonia plus a short neck and small ears—best fits the typical newborn presentation of Down syndrome.

Other options may include features that are less specific or not as consistently observed in newborns with trisomy 21, such as normal head shape with a flat nasal bridge, very large ears, or microcephaly with jaundice. While some of these can occur, they don’t align as closely with the common neonatal pattern as the trio of hypotonia, short neck, and small ears.