Common warts in their early stages are generally not just a red dot. The symptoms of common warts initially are usually grain-sized papules that gradually grow larger, with a rough, hard surface turning dirty yellow or grayish-brown, though some may be skin-colored. Common warts are typically solitary or multiple and commonly appear on the fingers, backs of hands, and edges of the feet. For common warts, topical medications can be used for treatment, such as applying recombinant human interferon ointment or using acetic acid solution. Additionally, treatment at a regular hospital's dermatology department can involve liquid nitrogen freezing therapy or carbon dioxide laser therapy. Surgical removal is also an option. If there are many warts, it is also necessary to combine treatment with oral antiviral medications and medications to boost the immune system.