Mollaret's meningitis refers to which of the following?
Recurrent pyogenic meningitis
Recurrent leptomeningitis due to collagen vascular disease
Recurrent meningitis due to hematological malignancy
Recurrent benign aseptic meningitis
Mollaret's meningitis is characterized by recurrent episodes of severe headache, meningismus, and fever; cerebrospinal fluid (CSF) pleocytosis with large "endothelial" cells, neutrophils, and lymphocytes; and attacks separated by symptom-free periods of weeks to months; and spontaneous remission of symptoms and signs. It is a recurrent, benign aseptic meningitis. Ref: Harrison, Edition-18, Page-162