A 4-year-old baby has a hard lump on the top of their head, as if the bone is bulging.

Patient's question:

No

Doctor's answer:

Hello, a 4-year-old child has developed a swollen lump on their head, which may be caused by infection or an adverse reaction due to subcutaneous stimulation factors. It is recommended to go to the hospital for a follow-up check-up. If necessary, gentle massage and warm compresses can be tried.