Advice

I am a little concerned. I have been having electric shock pain around my torso mostly but the pain can be anywhere on my body, the only way I get relief from this is to burn my skin with a hot water bottle. I also have had my vision go grey for a few minutes a few times, I get blurry double vision for no apparent reason also. Has anyone else experienced anything like this? I am undiagnosed and about to see a neurologist. Many thanks.