The so-called skin boil is a purulent hair follicle and perifollicular infection with the pathogenic bacteria mainly Staphylococcus aureus, followed by Staphylococcus albicans. Some causes, such as sassafras and erosion, can allow bacteria to invade and multiply; sometimes seborrhea can also be a trigger for its development. However, some people can have multiple and recurring boils, medically known as boils. Why is this so? On the one hand, some people have anemia, chronic nephritis, malnutrition, diabetes, long-term use of sebaceous steroids or immunosuppressants, and congenital immune deficiencies; on the other hand, more importantly, some people may have structural abnormalities of the skin itself that predispose them to the formation of boils, especially in the head and neck, axillae, vulvae, and buttocks, which doctors often diagnose as abscess perifolliculitis of the head, purulent sweat glands, and gluteal infections. They are often diagnosed as purulent sweat glands, multiple folliculitis of the buttocks, boils on the buttocks, and chronic abscess perifollicular pyoderma of the buttocks. Sometimes these conditions are comorbid with coalescing acne, and the follicular atresia triad needs to be considered. This often requires special examination and special treatment, and general anti-inflammatory and antibacterial treatment often fails to achieve the desired therapeutic effect. Therefore, the occurrence of boils on the skin may seem simple, but it needs to be carefully analyzed and treated differently in different cases to avoid adverse consequences and delaying the best treatment time!