Intracranial infections can cause fever. Intracranial infections can cause the patient to have a fever that can be recurrent. Intracranial infections include acute suppurative meningitis, viral meningitis, tuberculous meningitis and so on. 1. Septic meningitis: for example, acute septic meningitis has an acute onset, and the patient will show high fever, generalized muscle pain, nausea, vomiting, severe headache in the early stage, and the degree of headache is relatively heavy and gradually aggravated, and the patient usually has a stiff neck. 2. Viral meningitis: patients with viral meningitis will also have fever, headache, neck stiffness, nausea, vomiting and other symptoms. 3. Tuberculous meningitis: Before the onset of tuberculous meningitis, patients will show symptoms such as low-grade fever, night sweats, loss of appetite, emaciation, etc. The disease will also be characterized by headache, and in severe cases, nausea and vomiting will also be accompanied. If intracranial infection with fever occurs, it is recommended to consult a doctor in time to clarify the cause of the disease and treat it as soon as possible so as not to delay the condition.