Patient's question:
Patient Gender: MaleDoctor, my child is 23 months old, and the fontanel has not closed yet, still about the size of a soybean. The child's development in all aspects is normal. We have been supplementing calcium as well. What could be the reason for this? Will it affect the child's intelligence?
Doctor's answer:
Hello, the child is likely lacking in calcium. Vitamin D and calcium should be supplemented together. It has a certain impact on intelligence.Hello! Under normal circumstances, the posterior fontanelle is very small or already closed at birth, only about the size of a fingertip, and it closes latest by 6 to 8 weeks after birth. The anterior fontanelle has an oblique diameter of about 1.5 to 2.5 cm at birth. After 6 months, it gradually becomes smaller as the skull bones gradually ossify and typically closes between 1 to 1.5 years of age. Delayed fontanelle closure is associated with calcium deficiency and hypothyroidism. In some cases, delayed closure of the anterior fontanelle may be caused by intracranial pressure elevation due to hydrocephalus or other intracranial issues, requiring further medical examination at the hospital.