A stye (or sty) is an acute infection of the secretory glands of the eyelids.
Frequently, bacteria can enter and infect an eyelid oil gland, which are present in both the upper and lower eyelids, causing inflammation, pain, and redness of the eyelid, and even redness of the surrounding eyelid and cheek tissue. The medical term for stye is hordeolum.
The lump can point externally (outward) or internally (inward). These conditions are medically known respectively as an external hordeolum and internal hordeolum. Frequently, the lump appears with a visible whitish or yellowish spot that looks much like a large pimple. Usually, one obvious area of swelling is apparent on one lid, but many styes can appear on one or both eyelids simultaneously.
The lump frequently disappears by itself when the blockage of the gland opening is relieved. Furthermore, the infection often goes away when the pus is drained from the stye.
What Are Stye Causes and Risk Factors?
Styes are usually caused by infections of the oil glands in the eyelid. Very frequently, they are infected by bacteria, most commonly Staphylococcus bacteria.
Seborrhea (excessive oily discharge from the glands) may increase the likelihood of developing one of these infections. Certain other factors can contribute to the infection of the glands:
Medically Reviewed by a Doctor on 5/10/2016
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