In the case of CNS infections, the clinical presentation varies slightly depending on the cause of the infection. In the case of viral meningitis, the patient has a low or moderate to high fever, headache, nausea, vomiting, psychiatric symptoms, and even seizures, with increased protein and cell counts on laboratory tests. In the case of tuberculous meningitis caused by tubercle bacilli, the patient will have a severe headache and moderate to high fever. In case of cryptococcal meningitis caused by fungal infection, the patient will have severe headache with nausea, vomiting, high fever, and in severe cases, impaired consciousness and very high pressure on lumbar puncture cerebrospinal fluid examination.