An eyelid bump is often ... Risk factors for styes include: You may have a chalazion if you have a hard lump under your skin. Chalazia develop when thick oil blocks the oil gland.

Styes can crop up on upper or lower eyelids, and while most are on the outer edge, there are styes - called internal hordeolums - that develop on the inner surface of the eyelid, as well.

A pimple on your eyelid usually isn't acne — it's probably a stye, chalazion, or xanthelasma. A stye is a round, red bump that can be treated with a warm compress to drain the pus. A chalazion ...

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or you can develop it later in life, which is known as acquired ptosis. Depending on the severity of the condition, droopy upper eyelids can block or greatly reduce vision depending on how much it ...