Seizure

I have been diagnosed with MS for 19 years. I have had very few flare-ups and have been on medication since 1997. Recently I have had what appeared to be a seizure with an unresponsive stare for about 5 minutes as told by my dinner companion. My question is has this happened to anyone with MS? I will be seeing my neurologist in a couple of days but wonder if this episode is MS related?