Whether a boil is serious or almost healed depends on the patient’s condition and it is recommended to go to the hospital for treatment in a timely manner. Generally, if the boil is not accompanied by fever, headache, or chills, the boil is almost healed. However, if the boil is accompanied by headache, fever, or chills, the inflammation of the boil may be expanding, which means that the boil is serious and prompt treatment is recommended. Boils are usually caused by acute purulent infections of individual hair follicles and sebaceous glands due to invasion of hair follicles and sweat glands by Staphylococcus aureus bacteria, and begin as small red pimples that gradually increase in size over time. When boils appear, it is recommended to go to the hospital for examination and treatment in order to avoid delaying the condition. In addition, patients should do a good job of daily cleaning to prevent infection during the treatment period, and do not consume spicy and irritating foods in the diet to avoid aggravating the condition.