Swelling in your eye could be caused by something mild and temporary like a stye — or it could be a sign of certain concerning autoimmune conditions.

An eye stye, medically known as a hordeolum, is a common and often harmless condition that results from a bacterial infection in the oil glands of the eyelid. This infection causes the gland to become ...

Medically reviewed by Andrew Greenberg, MD Allergies, dry eye, corneal injury, infection, and tiredness are common causes of ...