Closed-brain syndrome

Medicine is more advanced nowadays, and women undergo strict examinations during pregnancy, so the babies born are all very smart and cute. However, in some less developed areas, people do not pay much attention to this physical examination. After a period of time, the baby was found to have closed forehead syndrome. So what exactly are the symptoms of closed-brain syndrome? Below is a detailed introduction for you.

1. Fontanelle refers to the gap in the skull formed by the loose connection of the skull bones of infants and young children. There are anterior fontanelle and posterior fontanelle. The posterior fontanelle is close to the occipital part of the head, and is a triangular gap formed by the sutures between the parietal bones and the occipital bones on both sides; the anterior fontanelle is at the top of the head, and is a diamond-shaped gap formed by the sutures between the frontal bones and the parietal bones on both sides.

2. The closure of the fontanelle is affected by the ossification of the skull and the development of brain tissue. The fontanelle is an important window that reflects the baby's development and physical health. By observing the changes in the fontanelle, various diseases can be discovered in time, allowing for early diagnosis and treatment. Therefore, parents should understand the normal development process of the baby's fontanelle and learn to identify some abnormal phenomena.

3. Normal closure time of fontanelle: Under normal circumstances, the posterior fontanelle is very small or closed when the baby is born, and can only accommodate the size of a fingertip. It closes at the latest 6 to 8 weeks after birth. The oblique diameter of the anterior fontanelle is approximately 1.5 to 2.5 cm at birth. After birth, as the head develops, the head circumference gradually increases and the anterior fontanelle also increases. Six months after birth, the skull gradually becomes smaller as it ossifies and usually closes between one and a half years old.

4. Premature closure: In a very small number of babies, due to maternal infection during embryogenesis or other diseases that lead to poor brain development and a small head, their head circumference is small at birth, and the anterior fontanelle closes prematurely 5 to 6 months after birth, causing microcephaly. For a few babies, when they are 5 to 6 months old, the fontanelle is only the size of a fingertip and seems to be about to close, but in fact it has not ossified. This is not premature closure. As long as the head circumference is normal, not less than 46 cm at one year old and not less than 47 to 48 cm at two years old, it is normal and there is no need to worry.

5. Delayed closure: Babies grow very rapidly during infancy, and their bone development requires vitamin D and calcium. If they are not supplemented in time, they are prone to rickets. The anterior fontanelle of babies suffering from this disease still fails to close 18 months after birth. In a few babies, delayed closure of the anterior fontanelle is caused by hydrocephalus or other reasons leading to increased intracranial pressure, and they should go to the hospital for further examination.

6. A sunken fontanelle is most commonly caused by dehydration in the baby's body. For example, if the baby does not replenish water in time after diarrhea, the baby needs to be replenished with fluids immediately. The use of large doses of dehydrating agents to reduce intracranial pressure for various reasons can also cause the anterior fontanelle to sink due to dehydration. The baby's body should be replenished with necessary water in time to prevent excessive dehydration from causing metabolic disorders in the body. Babies with malnutrition or chronic diarrhea due to long-term insufficient intake often have obvious sunken anterior fontanelles.

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