Congenital hypothyroidism

Hypothyroidism is a condition where the thyroid gland produces too little or no thyroid hormone, and the condition arises at birth. Common clinical features include decreased activity and increased sleep, feeding difficulty and constipation, prolonged jaundice, myxedematous facies, large fontanels (especially posterior), macroglossia, a distended abdomen with umbilical hernia, and hypotonia.