Fire boils on the back are usually not very dangerous. Fire boils are one of the surgical infections that may lead to an acute suppurative lesion in the area that can subside and heal with aggressive treatment. Fire boils, also known as boils, are mostly suppurative lesions caused by pathogenic bacteria, such as Staphylococcus aureus, that invade a single hair follicle and surrounding tissue. Boils may occur on the back, neck, head, face, buttocks, and armpits, resulting in small red, swollen, hot, and painful nodules that grow in size. Most boils can burst and heal on their own and usually do not require special treatment. If the condition is serious, you can apply hot compresses or ultrashort wave irradiation to the inflammatory nodules that do not burst, or use ichthyol ointment or mupirocin ointment to apply locally, and take amoxicillin, cefaclor, and other antibiotics to treat the condition. To summarize, fire boils on the back are not very dangerous, and the boils can gradually subside through active treatment.