Discharge of pus from the eyelid tissue, usually caused by infection or inflammation.
From Greek blepharon (eyelid) + pyon (pus) + rhoia (flow). This specialized medical term combines three Greek roots to describe the symptom of infected eyelids draining pus, common in medical literature from the 19th century onward.
Eyelid infections can get serious quickly because the area has rich blood flow and is close to your brain—that's why doctors take pus discharge from eyelids seriously and may culture it to find the exact bacteria causing trouble.
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