No single effective treatment for viral warts exists. Treatment is based on the age, size, number and location of warts. Common warts, esp in children, do not necessarily need treatment, because they often go away. Without treatment, however, spread can occur. Treatment involves destruction of the growth. In physical/surgical destruction, liquid nitrogen, which is extremely cold, is sprayed onto the wart or applied with a cotton-tipped swab. Because freezing causes pain, this is not tolerated well by young children. Warts can be locally anesthetized and then scraped, burned, lasered off or surgically cut out. Several chemicals are used to eradicate warts. Genital warts respond to a topical resin, podophyllin, applied in strong concentration at regular intervals by the doctor, or a prescription gel to be used at home.
Attribution: Avallain