Styes look a little bit like a boil or pimple in the eyelid or around the eye, but they’re normally filled with pus. They can cause swelling, pain, and tearing and be very irritating and unsightly.

A stye (also known as a hordeolum) is a painful, red lump that forms on the outer edge of an eyelid. It's typically caused by a bacterial infection in an oil gland or eyelash follicle. While ...