A chalazion/stye can occur on the outer angle of the eyelid. A chalazion/stye can occur at the eyelid edge. This large chalazion is most likely painful and must be treated vigorously to avoid developing bacterial complications. A chalazion/stye can occur on the inner surface of the eyelid (tarsal side). A cheese-like (sebaceous) discharge from the chalazion is often seen, especially after applying hot compresses.
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Stye (Hordeolum and Chalazion)  Information for adults

Picture of Stye (Hordeolum and Chalazion): A chalazion/stye can occur on the outer angle of the eyelid. Divider line
A chalazion/stye can occur on the outer angle of the eyelid.
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Overview
A stye (hordeolum) is a local, acutely inflamed growth (swelling, lesion) of the eyelid. They can occur at the lid margin or farther up the lid on either the inner (tarsal) side or the outer (skin) side of the lid. A chalazion is the chronic form of a stye, and its cellular makeup is different than that of a stye.

Both the meibomian and sebaceous oil glands of the lid can be involved in this process, which begins with a blockage of the normal openings of these glands, leading to the swelling. Typically, there is bacterial contamination.
Last Modified: 22 Dec 2008