My left eyelid/eyebrow area a;ways feels like a hair is bothering it. Sometimes it is unbearable. What could this be?

Some history-this started both times I was on Budeprion for smoking cesation.  The first time, this feeling in my eye went away eithin a month of stopping the medication.  This time, it has been over two months, and has not let up.  It feels like a hair entangled in my eyelashes, or stuck in the folds of my upper eyelid.  If I touch my eyebrow, it feels as if the "feeling" goes away.  But shortly after, seems to get worse.  The feeling gets worse the more tired I get.  I have tried sleeping longer. (over 10 hours)  nothing.  I have even tried the old Preparation H on my eyelid, to see of ot was just some sort of swelling.  Any sort of help would be appreciated.  This is getting to be an annoying "feeling"