I have all the normal symptoms which convince a HA sufferer that they have MS (or worse). Then I read something on here that persuades me it's normal symptoms of anxiety and I calm down. But then, out of nowhere - I'll get another massive twitch (eg chin) which literally makes me go weak at the knees and the whole cycle starts again. Few days of "symptoms", calming down, being reasonable with myself but then it all kicks off again. I don't feel hugely anxious but I suppose I'm usually pretty close to the edge....