Fire boils on the head all the time may be caused by bad hygiene habits, bacterial infection or increased sebaceous material. 1. Bad hygiene habits: fire boils on the head all the time may be due to poor living habits, inducing the blockage of hair follicles, leading to the emergence of a large number of bacteria in the hair follicle proliferation, the symptoms are recurrent, preferably in adolescents. 2. Bacterial infection: due to bacterial infection in the deep part of hair follicles and surrounding tissues, purulent inflammation is induced. If there are always fire boils, it may be induced by bacterial infection, such as Staphylococcus aureus and Streptococcus. 3. Increased sebaceous material: The abnormal increase of sebaceous material in the body, which blocks the pores of the hair follicles, may lead to the condition of having fire boils on the head all the time, which is common in the hairy and sweaty parts. If you have boils on your head, it is recommended that you consult a doctor in a timely manner and follow the doctor’s instructions for symptomatic treatment to avoid further aggravation of the condition.