A stye is a painful red bump that forms on the upper or lower eyelid near the eyelashes. Though painful, a stye is a relatively harmless inflammatory response to a bacterial infection. A stye is a ...

A stye is a tender, pus-filled lump on the eyelid caused by a bacterial infection in a clogged gland or eyelash follicle. Risk factors include poorly cleaned contact lenses, eye makeup buildup, and ...