Inflammation of the glands of the eyelid, particularly the meibomian glands that secrete oils to lubricate the eye.
From Greek blephara (eyelid) + aden (gland) + -itis (inflammation). This compound specifically targets inflammation of the specialized oil-secreting glands found along the eyelid margins.
Your eyelids are actually miniature oil-producing factories: when those tiny glands get inflamed, a stye forms—and while we call it a 'stye' colloquially, the technical name blepharadenitis sounds intimidating for what's essentially a pimple on your eyelid!
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