Styes result from a bacterial infection. The primary causes of a chalazion are obstruction of the oil glands (meibomian glands) along the rims of the eyelid or the oil glands (Zeis glands ...

A stye (medical term: hordeolum) is a common eye condition characterized by a small, painful lump or bump on the edge of the eyelid. It occurs when the oil glands at the base of the eyelashes ...

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.

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 ...

But unlike with pink eye, a stye is often accompanied by a pimple-like bump on the eyelid. This bump can also occur inside of the eyelid, causing swelling and redness on the external part of the eye.

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 ...