A two-month-old baby has a small lump on the back of their head. What is it?

Patient's question:

No

Doctor's answer:

Your baby's condition, where the back of the head is larger, is related to sleep posture to some extent, but it is also related to genetic factors. If other family members have this phenomenon, it is more likely to be caused by genetics. However, don't worry, this will not affect the child's normal growth and development.