Your child seems to have developed a superficial bacterial infection of the skin.
A's advised by the doctor, you should keep the affected area clean and dry.
This infection spread by the discharge of liquid. It tends to develop whenever the liquid touches.
Keep the area covered as much as possible.
Apply a topical antibiotic
cream over it twice a day.
Taking oral antibiotics
is not very essential in this skin condition.
Dr Geetika Paul