Millions of children are infected by enteroviruses each year, usually exhib
iting only mild symptoms. Although enteroviruses are a common cause of comm
unity-acquired aseptic meningitis, enteroviral meningitis usually has a ben
ign course. We describe a 14-year-old patient with enteroviral meningoencep
halitis diagnosed by polymerase chain reaction. Her level of consciousness
declined rapidly after hospital admission and resulted in a locked-in state
. Although she experienced slow neurologic improvement, residual neurologic
deficits remain. Although there is a general awareness of the characterist
ics of enteroviral encephalitis, this case report is significant in present
ing a case of unusual severity and sequelae. To our knowledge, this is the
first published report of an enterovirus encephalitis leading to a locked-i
n-state.