Internal styes usually begin in a gland within your eyelid tissue. They push on the surface of your eye as they grow and tend to be more painful than external styes. Most styes are caused by an ...

Source: Focus Medica. A small red, painful lump in the edge of the eyelid. Stye is usually caused by bacterial infection. It may be present inside or outside the eyelid on one or both eyes and is ...

Unlike some forms of pink eye, a stye is not contagious. A stye could either be internal or external. An external stye can be visibly seen on your eyelid. However, an internal stye will form on ...