Symptoms of hypothyroidism in infants can include:
Constipation
Poor feeding
Poor growth
Jaundice (yellow discoloration of the skin and eyes)
Excessive tiredness
Symptoms of hypothyroidism in children include:
Similar to adult symptoms
Excessive fatigue
Poor growth
Poor school performance
Symptoms of hypothyroidism in adults include:
Early symptoms
Easy fatigue, exhaustion
Poor tolerance to cold temperatures
Constipation
Carpal tunnel syndrome (pain at the wrists and numbness of the hands)
Later symptoms
Poor appetite
Weight gain
Dry skin
Hair loss
Intellectual ability worsens
Deeper, hoarse voice
Puffiness around the eyes
Depression
Irregular menstrual periods or lack of menstrual periods