A sunken piece in the back of the head of an infant may be caused by the posterior fontanel, abnormal growth and development of the skull, and improper sleeping posture.
1. Posterior fontanel: When the posterior fontanel of an infant does not close in time, it will cause the symptom of sunken back of the head, which usually can be closed at about 6 weeks of the infant.
2. Abnormal cranial growth and development: it can lead to abnormal shape of the cranium, such as vitamin D deficiency, which leads to deformation of the cranium after softening, and may cause the back of the head to be sunken in a piece of the situation.
3. Improper sleeping posture: infants are used to sleeping on one side, and the pressure on the skull for a long time will lead to changes in the shape of the skull, which may cause the back of the head to be sunken.
If the back of the baby’s head is sunken, it is recommended to go to the hospital for a relevant examination to clarify the specific causes of this phenomenon and its impact on the baby, and timely targeted treatment.