Ok, I had to think and think and think and think...............

I went waaaaaaaaaay back to before I was diagnosed with MG. I do remember feeling sort of "wired" -- like I had electricity running through the middle of me. But, this STOPPED when I started taking Claritin every day. I remember being so shocked by this -- I actually MISSED the "hum" -- seemed to have had it most of my life.

I also had a brain that would NOT shut down -- I sometimes had trouble going to sleep at night -- replaying the day -- thinking about the next day's work -- Claritin calmed that down, too. GOOD STUFF!!

I don't take Claritin now -- it stopped working -- switched to Zyrtec about a year ago -- the humming hasn't returned.