Medically speaking, a stye is a boil that develops from the root of an eyelash, on the outer edge of an eyelid. A boil means a bacterial infection, which in this case is common and not serious. The small red bump with a white tip that forms is about the size of a grain of barley, hence the name stye.
Although benign, a stye can be painful and often causes significant discomfort. If left untreated, the stye should disappear on its own after about ten days.















