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A chalazion and a hordeolum are both bumps on the eyelid. A hordeolum, also called a stye, is caused by bacterial infection, while a chalazion results from an obstructed gland. Knowing whether you ...

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Styes are caused by an infection in one of the eyelash hair follicles. Children do seem to get them more than adults, probably because they rub their eyes with dirty fingers, but often there is no ...

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