If the warts become red and large, the progressive stage is more likely. If you have a history of trauma or scratches, you may have a homomorphic reaction to the wart along the wounded area, with flat papules along the broken area. The actual fact is that you can use the topical application of recombinant interferon alpha 2B ointment or imiquimod ointment for antiviral treatment. If there is still no significant remission, intramuscular injection of BCG polysaccharide is needed in order to improve the body’s immunity and enhance the antiviral ability. It is also necessary to apply liquid nitrogen freezing and electro-ionic cautery to destroy the warts and promote improvement.