What is the reason for the redness in the scrotum of a three-month-old infant?

Patient's question:

Patient age: Three and a half months, scrotum is red but not itchy, eating and sleeping well for two weeks

Doctor's answer:

Medical Analysis: Hello, the redness in your child's scrotal area is likely caused by urine retention. It is important to clean and keep the area dry.
Advice: Clean the child daily and avoid using wet diapers as much as possible. Maintain ventilation and apply topical erythromycin for treatment. The child is at risk of diaper rash, so parents must take the child to a doctor immediately for treatment. Avoid using medication blindly to relieve symptoms. For parents, it is crucial to promptly monitor the child's condition and provide the best possible support for timely treatment.