Prognosis depends on the causative organism and the severity of the illness. In most cases, recovery is possible with prompt and appropriate treatment. However, in some cases, brain damage may occur. Underlying conditions such as being on immunosuppressant medications, cancer (malignancy), HIV infection, and alcoholism worsen the prognosis.
Differential diagnoses include subarachnoid hemorrhage, bacterial endocarditis, malignant hypertension, lead poisoning, porphyria, migraine, viral encephalitis, cerebral abscesses, cerebral tumor, and subdural hematoma.
Neurologist and infectious disease specialist.
Last updated 11 July 2015