Nothing but a blocked oil gland also known as a chalazion. If you could just describe the sypmtoms... otherwise it's a hard, painless mass that typically comes up quickly over a few days. It's most common in people with oily skin.
When a diag hits your eye/ and it’s just a stye/ that’s glamor-é!
If tender than external hardolium and if non-tendor than chalazion, because stye occur at hair follicle. And these two are pathology of meibobium gland.