What is the reason why the baby always shakes his head when sleeping at night?

Patient's question:

No

Doctor's answer:

Hello, there's no need to worry too much about the head shaking. The baby is still young, and their nervous system hasn't fully developed yet. It's normal to have some minor issues, and they will improve as the child grows. Just observe whether it gets lighter over time and don't get too stressed about it. It should improve around the age of 18 months.
When the hair on the back of the head falls out completely, it's called (zhěn tū), which is a sign of calcium deficiency. Make sure to supplement with calcium and get more sun exposure. The hair should grow back after the child turns one year old, so there's no need to worry. Calcium supplements can also be used for treatment.