Infection of warts is correctly described as the appearance of warts after infection with the human papilloma virus, the initial stage is mainly manifested in the external genitalia and other parts of the small rice grain-like skin lesions. Most people have no obvious symptoms after infection with human papilloma virus, and some patients develop warts after 2 to 3 months of infection. The main manifestation is the appearance of skin lesions on the external genitalia and perianal skin mucosa. The lesions may also appear in the mouth, armpits, breasts and other parts of the body. The lesions mostly appear as single or multiple small reddish rice grain-like particles, which are softer in texture and sharper at the tip. There is usually no obvious abnormality in the early stage of warts, but a few patients may have pain, itching, foreign body sensation and other discomforts. It is recommended that patients actively seek medical treatment when abnormalities are detected, so as not to delay the condition.