Patient's question:
When the baby is born, the posterior fontanelle is very small or already closed, so why is the child's fontanelle closing late? Does anyone know?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 large enough to fit a fingertip. It typically closes by about 6 to 8 weeks after birth. The anterior fontanelle has an oblique diameter of approximately 1.5 to 2.5 centimeters at birth. By 6 months of age, as the skull gradually ossifies, the fontanelle gradually becomes smaller and usually 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 hypertension due to hydrocephalus or other intracranial conditions, requiring further medical evaluation at the hospital.