A child with primary congenital hypothyroidism might present with which of the following signs?

In the context of primary congenital hypothyroidism, the child often exhibits specific signs and symptoms due to the lack of thyroid hormones crucial for growth and development. Dry skin and dry, brittle hair are particularly indicative of this condition. These manifestations occur because thyroid hormones play a vital role in numerous metabolic processes, including skin and hair health. A deficiency can lead to reduced sebaceous gland activity, causing dryness of the skin and hair.

While jaundice, short stature, and congenital heart defects may be observed in various conditions affecting children, they are not classic presentations specifically associated with primary congenital hypothyroidism. Jaundice can occur in newborns for several reasons but is not a primary symptom of hypothyroidism. Short stature can be a long-term effect of untreated hypothyroidism but is not an immediate sign. Congenital heart defects are unrelated to the direct effects of thyroid hormone deficiency in newborns. Thus, the signs and symptoms of dry skin and hair provide a clearer and more immediate indication of primary congenital hypothyroidism in children.