What is the reason for a hard lump on a child's penis?

Patient's question:

Just appeared again a few days ago, it's a hard lump, haven't seen a doctor yet. Past treatment history and effectiveness: didn't care what kind of help: want to know what that's all about

Doctor's answer:

It is a localized inflammatory condition of the child, which may be caused by folliculitis, poor hygiene, allergies, or other factors that could lead to recurrence.
Recommendations:
You can visit a hospital for examination. Apply an anti-inflammatory ointment, pay attention to local hygiene, frequently clean the area, drink more water, and maintain a light diet.
The above advice is for the question "What could be the reason for a hard lump above the penis of a 3-month-old child?" We hope it helps. Wishing you good health!