What is the reason for a large lump in the middle of the back of a 7-month-old baby?

Patient's question:

No

Doctor's answer:

Hello, it might be caused by an abscess. Generally, there is skin redness and swelling, and in severe cases, there may be fever. Before it softens, you can apply fish oil ointment externally. It's important to maintain local hygiene, and at the same time, take anti-inflammatory medication to prevent infection.