CRP and aseptic meningitis: Figure 3a summarizes the treatment schedule.  Figure 3b,c shows the change in blood test (WBC and CRP) and CSF test (cell count and glucose level) during hospitalization, respectively. Twenty-four days after hospitalization, the recurrence of aseptic meningitis was suspected from the elevation of WBC, CRP, and cell count. On the other hand, most symptoms and image findings improved. We determined to continue steroid administration for two reasons: first, the symptoms improved after steroid administration, and second, autoimmune encephalitis could not be entirely excluded [15].