Boils, commonly known as fire bumps, are mainly caused by Staphylococcus aureus infecting the deeper part of the hair follicle and the tissue surrounding the follicle. Most of them are single. Recurrent and multiple cases are called boils. Possible causes of the disease include skin injury, low immunity, anemia, chronic nephritis, malnutrition, diabetes, long-term application of glucocorticoids and immunosuppressants, etc. Clinical manifestations: It is mostly seen in young and middle-aged men, and it usually occurs on the head, face, buttocks, neck and other parts. Initially, it is a follicular inflammatory papule, which gradually increases into a red painful nodule with obvious basal infiltration and high local skin temperature, and gradually the central necrosis of the nodule appears as a pus plug, which discharges pus, blood and necrotic tissue after dislodging, and the inflammation gradually disappears, leaving a scar after healing. The local lymph nodes may be enlarged and may be accompanied by fever and headache, etc. Severe cases may cause sepsis. Facial boils, especially those occurring in the “danger triangle”, can easily enter the cranium and cause cavernous sinus thrombophlebitis or even brain abscess if the infection is squeezed, resulting in headache, chills, high fever and even coma, which can be critical. And the rash of boils is chronic and recurrent. Treatment: Topical antibiotic creams (such as fusidic acid cream, mupirocin cream, etc.) can be applied topically, and sensitive antimicrobials such as penicillin-resistant semisynthetic penicillin, first- or second-generation cephalosporins, macrolides, etc. can be taken orally or ordered quietly, and it is best to choose antibiotics based on the results of drug sensitivity tests. Prevention: Exercise to enhance body resistance, pay attention to skin cleanliness, maintain good skin hygiene, avoid extrusion, boils need to find the triggering or aggravating factors.