What are the symptoms of hypothyroidism in infants?

Patient's question:

No

Doctor's answer:

Hello, infant hypothyroidism is also known as cretinism. In neonatal period, it is mainly characterized by lethargy, poor crying, poor responsiveness, excessive sleepiness, and hypotonia. Additionally, it often presents with feeding difficulties, abdominal distension, constipation, prolonged physiological jaundice, and low body temperature.
Symptoms after 3 months include:
Special facial features: Facial swelling, wide-set eyes, flat nasal bridge, large and thick tongue often protruding outside the mouth, and dry hair.
Special physical features: Short stature, upper body larger than the lower body, and a large head with a short neck.