To be honest I dont know what its from but I have numbness down my entire left side at times and this has been going on for about
6 years now.Had all kinds of test and all I get is we dont know what it is!
What I have come or at least trying to realize is that every thing we feel in our body is not something horrific. I know how scarey this is but if the docs cant find anything try not to panic and just keep telling yourself its not horrible.Believe me I have to do this myself everyday!