Causes of Fever with Headache, Abnormal Behaviour or Reduced Conscious Level
Intracranial infection Viral encephalitis Other infectious causes of encephalitis Bacterial meningitis (Chapter 68) Tuberculous meningitis (Appendix 68.1) Cryptococcal meningitis (Appendix 68.2) Subdural empyema Brain abscess Systemic infection Septic encephalopathy Infective endocarditis Mycoplasma and Legionella infection Syphilis, Lyme disease, leptospirosis Non-infectious Poisoning (e.g. with amphetamine or cocaine) Alcohol withdrawal syndrome (Chapter 106) Cerebral venous thrombosis Acute disseminated encephalomyelitis (seen in young adults; usually follows infection) Auto-immune encephalitis (fever seen in ∼50% cases) Neuroleptic malignant syndrome (Appendix 69.2) Acute intermittent porphyria |