What medicine is used for diaper rash in newborns?

Patient's question:

Over the past five days, I have noticed diaper rash on my buttocks
There are no signs of rupture, oozing, or infection!

Doctor's answer:

The cause of diaper rash is the skin coming into contact with urine in a warm and humid environment. Therefore, choosing diapers with strong absorbency and good breathability can keep the area dry and prevent overheating, eliminating the conditions for skin lesions and naturally reducing the occurrence of diaper rash. Developing good hygiene habits is essential; parents should change the baby's diaper promptly to prevent them from wearing wet and damp diapers for extended periods. Before changing the diaper, parents should wash their hands thoroughly with water and soap to avoid contaminating the diaper with bacteria or transferring them to the baby.
Before putting on a clean diaper, especially after the baby has had a bowel movement, it is necessary to clean the buttocks with neutral soap and warm water, then gently wipe them dry with a soft cotton gauze. This helps maintain dry skin and can be followed by applying a moisturizer to keep the skin hydrated while reducing the opportunity for contact with urine. The baby's buttocks should be exposed to air and sunlight for a certain amount of time each day to allow the skin to breathe freely.
If diaper rash does occur, it is important to keep the affected area dry. The buttocks can be exposed to sunlight appropriately, but avoid rubbing the rash. After cleaning, use a soft cotton gauze to dry the area thoroughly. Local application of petroleum jelly or an anti-inflammatory ointment can form a protective barrier to isolate irritants. In severe cases, seek medical attention promptly.