I understand that you are worried about this. Flat warts however may require a doctor's supervision to remove them. They are flat and thus are closer to the skin unlike cauliflower or pedunculated ( stalked) warts. I would not advise that you apply wart removal medication by yourself. Most wart removal medications are abrasive. Given that these flat warts are on the face
, you may need a physician to help you remove these.
Electrocautery and cryotherapy have been used in removing warts. However, we are dealing with a child here. We need to determine the best form of therapy for your child. Do not apply any medications without your physician's knowledge and supervision.