An eyelid bump is often a stye, a pimple-like bump that can be uncomfortable or unsightly but goes away on its own. Other causes include milia (milium), chalazion, or, in rare cases, skin cancer.

Your son's stye is also known as a chalazion or Meibomian cyst. It is a small lump on the eyelid due to a blocked oil gland, and can occur on any eyelid. Your son's eyelids contain many oil ...

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 ...