[Aseptic meningitis after intradural anesthesia].

We report a case of aseptic meningitis after intradural anesthesia in a 70-year-old male. Clinical features developed 4 hours after surgery, and they consisted of high fever, severe headache, drowsiness and temporospatial disorientation, without signs of meningeal irritation. The analysis of cerebrospinal fluid (CSF) showed pleocytosis, normal biochemical findings, and absence of microorganisms both in Gram stain and in culture. The outcome was favorable, and the clinical features disappeared within 48 hours without antibiotic therapy.