How do you treat a wildfire for a 9-month-old baby?

To treat a cold sore in a 9-month-old baby, it is important to avoid using over-the-counter products. Instead, it is recommended to consult the baby's doctor to evaluate the situation and determine if a prescription is necessary. It is essential to avoid touching the lesion and to frequently wash your hands to prevent spreading the virus to other parts of the body. Once the sore is healing, applying vaseline several times a day can help. If you have any other questions, feel free to ask your healthcare provider for guidance.