The patient may have perianal warts, a common skin condition caused by infection with low-risk HPV.

Warts on the buttocks may be caused by a low-risk type of HPV infection, which can lead to abnormal proliferation of skin cells to form warts. Perianal warts are usually painless, but sometimes may cause mild discomfort or itching. If symptoms persist or change, you should see a doctor as soon as possible for diagnosis and appropriate treatment.

The patient may have perianal warts, a common skin condition caused by infection with low-risk HPV types. In addition, prolonged exposure to contaminants, friction, or trauma may also increase the risk of developing warts.
It is recommended to keep the affected area clean and dry, and avoid scratching or over-stimulating the warts. If you notice the warts enlarging, becoming painful, or experiencing bleeding, seek medical attention promptly. At the same time, pay attention to personal hygiene and avoid sharing towels and other personal items with others to reduce the risk of transmission.