Whether or not the flat back of the head can be restored depends on the age of the patient, and trying to correct a flat head more than 18 months after birth is poorly effective. Newborns have anterior and posterior fontanelles, which usually close at birth or 6-8 weeks after birth, while the anterior fontanelles usually close at 12-18 months after birth with the ossification of the skull, after which the cranium is poorly malleable. Therefore, if you want to improve the flattening of the skull, you need to intervene as early as possible, especially within the first 6 months of life. This can be improved by changing sleeping positions and alternating between left and right side head tilting. The cranial shape can also be corrected by customized wearing of specialized appliances. Individualized treatment plans for flat back of the head should be determined in the hospital after an interview with a medical professional.