Sqad, how do you mean this is related to fatigue? Do you mean as in a dry eye complaint?
A stye is an infection of the lash follicle and you would usually see at least some redness on the lid margin, often with a small yellow head on it.
This could be something or nothing. These symptoms can sometimes be associated with dry eyes, foreign bodies under the lid or even corneal erosions which are small breaks in the surface of the cornea.
If your symptoms bother you then why not get someone to look at your eyes.