12% of patient with acute encephalitis in England die from the illness (1) and many are left with residual physical or neuropsychological deficits which require long-term multidisciplinary management (2).
Untreated herpes simplex encephalitis is is progressive and often fatal within 7-14 days with a 70% mortality rate in untreated patients. The poorest prognosis for viral encephalitis occurs in patients with herpes simplex encephalitis and subacute sclerosing panencephalitis (3).
References:
Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page