What are the symptoms?
A stye usually starts as a red bump that looks like a pimple along the edge of the eyelid.
As the stye grows, the eyelid becomes swollen and painful, and the eye may water.
Most styes swell for about 3 days before they break open and drain.
Styes usually heal in about a week.
A chalazion forms a firm lump or cyst under the skin of the eyelid.
Chalazia grow more slowly than styes. If a chalazion gets large enough, it may interfere with vision.
The inflammation and swelling may spread to the area surrounding the eye.
Chalazia often go away in a few months without treatment.
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