A one-year-old child has a red envelope on his head. What is the reason?

Problem analysis: From your description, the child's condition is considered to be caused by bacterial infection.

Suggestion: There is a small red envelope on the body, which needs to be distinguished from the small red envelope caused by this allergy. If it doesn't itch, it seems to be folliculitis. Through the treatment of this anti-inflammatory drug, I suggest taking this compound and metronidazole orally and applying this erythromycin ointment to the local acne externally, so that it can be cured. If it is an allergic condition, it needs symptomatic treatment with antiallergic drugs to be completely cured.