1, the cause of the fontanel depression
(1) The main reason for the depression of the fontanel of the baby is the lack of water in the body. For example, if the baby has loose bowels for some reason and fails to replenish water in time, the body will be short of water, leading to fontanel invagination. Or if you don't supplement the baby with proper drinking water for a long time, it will lead to water shortage in the body, and there will also be a depression in the fontanel. In this case, it is necessary to supplement the baby with appropriate amount of water in time to increase the water content in the body, thus alleviating this symptom.
(2) In addition, if the baby's body is in a state of malnutrition and emaciation for a long time, then there are also symptoms of fontanel depression. At this time, it is necessary to supplement the baby with nutrition in time. If the baby is still breast-feeding, you should try to change the baby into a more nutritious milk powder. If you have added complementary food, you can add food rich in protein and vitamins to your baby. Drugs, such as zinc gluconate oral liquid, can also be added according to the doctor's instructions.
2. The former and the latter.
( 1) Qianfonten
Touch the baby back and forth along the center line of the head, and you will find that there is an opening in the front and back of the baby's skull, which is soft to touch, and the front end is called the front chimney door, which is rhombic. It is the largest suture intersection on the skull, because there is no bone block here, which is slightly concave and soft compared with other parts, and there will be a slight beating feeling. After the baby was born for 6 months, the area of the anterior fontanel became smaller with the ossification of cranial suture, and 1 year was closed, and it was replaced by bone at the latest.
(2) Houfontanel
The rear chimney door is located behind the baby's head, at the junction of the occipital bone and the two parietal bones. It is small in size and sometimes even out of reach. The rear chimney door is close to being closed when the baby is born, or it can only accommodate the fingertips, and it is closed about 2-4 months after birth.
Although the baby's fontanelle is small, it is an important window to reflect the baby's health. Within the baby 1 year, many diseases can be found as soon as possible by observing this small window, so that the baby can be diagnosed and treated as soon as possible. Therefore, mommy should know more about the normal development process of the baby's fontanel and the abnormal phenomena that are easy to appear.
3, fontanel closing age
The fontanel refers to two "skylights" with no bones on the top of the head when the baby is born, which is called "fontanel" in medicine. Generally, the posterior fontanel is closed 3 months after birth, and the anterior fontanel will not be closed until 1.5 years old. People often say "skylight" or "fontanel" mainly refers to the front fontanel.
The human skull consists of six bones. When the baby is born, the skull is not fully developed, so there is a gap between the bones, and two areas without bone cover are formed on the top of the head and behind the pillow, which are called anterior fontanel and posterior fontanel respectively. When a normal baby is born, the size of the anterior fontanel is about 1.5×2cm. Generally speaking, when the baby 1 year old and 1 year old are 3 months old, the anterior fontanel is basically closed. The posterior fontanel is generally not obvious and usually closes 2-3 months after birth.
4, clean the baby fontanelle
The fontanel is a gap left by incomplete development of the head and skull when the fetus is born. The posterior fontanel usually closes within three months after birth, and the anterior fontanel closes about 1 ~ 1.5 years after birth. Because there is no hard skull covering at the fontanel, we should pay attention to protection to prevent brain damage.
When washing the baby's hair. You can wash the fontanel door, but the action should be gentle and you can't scratch it with your fingers. Don't overheat the shampoo, you should use warm water.
Some babies have tan greasy scales on their foreheads, which is seborrheic dermatitis of babies. You can use sterilized cotton to smear paraffin oil or refined vegetable oil on the scales, soften them and then gently wipe them off with sterilized cotton. Do not forcibly remove it. This disease can heal itself, as long as it is not infected, there is no need to apply any medicine. When washing your hair, because your baby's skin is delicate, you should use neutral soap with little irritation.