When do babies soft spots go away?

Babies typically have soft spots, known as fontanelles, on their skulls that close as they grow. The anterior fontanelle, located at the top of the head, usually closes between 12 to 18 months of age, while the smaller posterior fontanelle, at the back, often closes by 2 to 3 months. These soft spots allow for brain growth and the flexibility of the skull during childbirth. If there are any concerns about a baby's fontanelles, it's best to consult a pediatrician.