Sitting on a hot stool that someone else has just sat on, my ass itches and boils to my genitals for several years.

Hello, your condition is more folliculitis. It is an inflammation of the skin surface caused by purulent bacterial infection, which mainly occurs in areas with excessive hair and sebum secretion. The symptoms of folliculitis are mainly red papules, pustules and itching pain.

It is suggested that iodophor disinfection (external use) or local application of Baiduobang can be used for treatment. Pay attention to personal hygiene and abstain from spicy food.