Relevance of cerebrospinal fluid findings in patients with multiple sclerosis and seizures.

Seizures occur 2-3 times more frequently in Multiple Sclerosis (MS) patients compared to the general population. The prevalence of seizures is reported to be 1.5-7.8% in MS population. However, it is unclear if seizure is an indirect symptom of neuroinflammation in MS. In our study, we explored the relevance of cerebrospinal fluid (CSF) findings in this unique patient cohort with MS and seizures. We retrospectively reviewed the charts of 32 MS patients with subsequent seizures (MSSS) and 12 patients with seizures followed by MS (SFMS). These two study groups were compared with two control groups - MS without seizures (MSNOS) and seizures without MS (SNOMS). Clinical characteristics and CSF findings between these groups were compared using boot strapped independent t-test. The CSF lymphocyte percentage of the SFMS group (95.6 ± 3) was significantly higher compared to MSNOS (66.0 ± 36.9, p = .04) and SNOMS (81.7 ± 10.0, p = .03). The CSF IgG index was significantly higher in SFMS group (1.9 ± 1.2, p = .02) as compared to MSSS group (0.99 ± 0.4). Patients with seizures as initial symptom of MS may have higher degree of CNS inflammation. Nonspecific clinical symptoms and atypical imaging findings in patients presenting with seizures may warrant close monitoring for development of MS.