Benign form of herpes simplex encephalitis.

A 34-year-old woman who presented with only severe headache for 12 days was reported. She was initially diagnosed with cerebral infarction of the right temporal lobe and treated with aspirin, without improvement. On admission, she had bilateral papilledema. Other findings were unremarkable. CT scan and MRI of the brain revealed an area of cerebritis at the right temporal lobe. Lumbar puncture showed high opening pressure with normal CSF profiles. The patient was treated with intravenous acyclovir which gave a favorable outcome.