Red,painful swelling or pimple containing pus near the edge of the eyelid from a bacterial infection in a sebaceous gland is known as:

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A red, painful swelling or pimple near the edge of the eyelid containing pus is a characteristic of a hordeolum, also known as a stye. It is caused by a bacterial infection in a sebaceous gland. Blepharoptosis refers to drooping of the eyelids, entropion is a condition in which the eyelid turns inward, and nystagmus refers to involuntary eye movement.

Red,painful Swelling or Pimple Containing Pus near the Edge of the Eyelid