Which of the following symptoms would most likely NOT be associated with congenital hypothyroidism in infants?

Congenital hypothyroidism in infants is characterized by a variety of symptoms that arise due to insufficient thyroid hormone production. While each of the other symptoms listed can be common indicators of this condition, excessive crying is typically not associated with congenital hypothyroidism.

Infants diagnosed with congenital hypothyroidism often exhibit decreased muscle tone, which reflects a lack of energy and metabolic function due to low thyroid hormone levels. Prolonged sleepiness is another common symptom, as these infants may be lethargic and show a reduced level of alertness. Poor feeding is also frequently observed because the lethargy and low energy levels can lead to decreased interest in feeding and difficulties in the feeding process.

In contrast, excessive crying is more characteristic of various other conditions or issues, such as colic or discomfort from factors unrelated to thyroid function. Therefore, it is not a typical symptom associated with congenital hypothyroidism, making it the correct choice in this scenario.