The duration of fever in intracranial infections is uncertain, and the exact duration is related to the type of pathogen infecting the patient, the patient’s own physical condition, and whether he or she receives timely and appropriate treatment. In viral meningitis, for example, the duration of fever is around 3-5 days, with the possibility of reducing it to 2-3 days if treated promptly. In the case of septic meningitis, which is caused by a bacterial infection, the fever lasts for a relatively long time, possibly 7-10 days, which may also be shortened if treated promptly. However, in the case of drug-resistant bacterial infections, where antibiotics do not kill the bacteria well, it is also possible for the fever to last for more than 2-3 weeks. In the case of tuberculous meningoencephalitis, patients may have recurrent low-grade fever for a long time and may have fever until the tuberculosis is completely controlled, with patients having fever for as short as 3-4 weeks or as long as 8-12 weeks.