Hypothyroidism in infants
Although hypothyroidism most often affects middle-aged and older women, anyone can develop the condition, including infants. Initially, babies born without a thyroid gland or with a gland that doesn't work properly may have few signs and symptoms. When newborns do have problems with hypothyroidism, the problems may include:
Yellowing of the skin and whites of the eyes (jaundice). In most cases, this occurs when a baby's liver can't metabolize a substance called bilirubin, which normally forms when the body recycles old or damaged red blood cells.
A large, protruding tongue.
An umbilical hernia.
As the disease progresses, infants are likely to have trouble feeding and may fail to grow and develop normally. They may also have:
Poor muscle tone
When hypothyroidism in infants isn't treated, even mild cases can lead to severe physical and mental retardation.