My mom had it and it was triggered by what was "extreme emotional stress" to her. Once the stressful situation went away so did the blepharitis.
Maybe you could start listening to some relaxation/hypnosis type cd's or mp3's while laying down at night.
There are excellent resources on the internet with suggestions on how to relax. Unlike Nike, we as women just DON'T DO IT.
Camomille tea, a tiny tiny does of Xanax, Progressive Muscle Relaxation techniques, deep breathing exercises, yoga and the list goes on and on.........
Take time for yourself A., no one else is.
~A.