Warts in children are extremely common and your concern about spreading is very valid. Children tend to touch their warts frequently and have more contact with other children, which facilitates transmission. The challenge with treating warts in children is finding an approach that's effective but also tolerable for a young person who may be anxious about medical procedures. Many standard treatments can be uncomfortable or require multiple appointments, which can be difficult for children. Additionally, children's skin is more delicate and scarring is a greater concern, especially on visible areas like the hands. Over-the-counter treatments can work but they often take months and require consistent application, which is challenging with young children. The picking behavior you mentioned is problematic because it can not only spread the warts but also lead to secondary infections. You might consider covering the warts with bandages to reduce picking and prevent spreading. In terms of professional treatment, there are options that are relatively quick and well-tolerated by children, though you'll want to discuss with a pediatric dermatologist what would be most appropriate based on your child's age, the number and location of warts, and their anxiety level about procedures.