I had this for about a week on and off, some days more than others during the time I had it. I didn't know what it was as it was unusual for me to have this eye twitch, I had, had it before when I was younger, I think it used to only last a day, but I had this one this year for a week approximately, it was unusual.
People have given me different 'possible' causes for it, one person suggested it could be a tree allergy, to a certain tree pollen or something like that. It was during a particularly hot month, with temperatures higher than the norm, in the summer.
Another person suggested it could be a magnesium deficiency. (I would seek professional help before taking tablets if this were the case, personal opinion only, I can not give medical advice and I'm not a medical professional or nurse etc)
There is also stress which is another thought.
Mine went away by itself, but was a bit worrying at the time. I thought it might be eye strain or tiredness as well. (personal experience only)
Post Edited (HappyBean) : 10/28/2013 5:17:17 PM (GMT-6)