Thanks for the responses everyone. Very reassuring informative. I hadn't seen anyone mention it before so it’s interesting there’s a few that suffer with it.

Yep exactly Janet I think stress does cause that twitching

I get it sometimes, I believe it’s stress.

Yes, I had this trouble off and on for years. It rarely happens anymore. It seems to me that extra stress and fatigue can bring it on. ...Not the normal everyday fatigue, but when I was just too active and pushing without realizing how much I was overdoing it, forcing myself too hard.

I tend not to bother the doctors anymore as a lot just gets put down as “part of my condition”. This is the third day it’s been effecting me, but thankfully a lot less than yesterday. Eyes are a bit more watery today though. Which is a bit of pain when my job is desk based in front of a computer.