A stye is a lump on your eyelid caused by a bacterial infection. Improperly sanitized contact lens, eye makeup, and conditions like diabetes and rosacea can increase your risk of a stye.

A chalazion can develop when a person has a stye that does not go away. Although both blepharitis and conjunctivitis can develop as a result of bacteria, they are different eye conditions.

a chalazion is more likely to develop, as they are not because of infection. When the stye is caused by infection, it can ...

Your son's stye is also known as a chalazion or Meibomian cyst ... Styes are usually not related to any disease and do not harm the eye or vision. You mention your son's immune system.

Similar to an acne pimple, a stye forms when a tiny oil gland ... on an eye care provider to drain it. Residual eye lines and mascara can cause chalazion – a painful cyst or lumps on the eyelid.

In some cases, a stye can turn into a chalazion if it doesn't drain properly ... lead to painful infections that spread throughout your eye and potentially cause vision damage.

A hordeolum is the medical term for a very common eye ailment –– a stye. "At the base of the ... or ailment –– such as starting as a chalazion or extending from a sinus infection.