A sty is a localized infection of which structure?

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Prepare for your Microbial Growth Phases, Oxygen Needs, and Immunity Types Test. Use our multiple-choice questions and detailed explanations for each answer to enhance your understanding and ensure success!

Multiple Choice

A sty is a localized infection of which structure?

Explanation:
A sty is a localized bacterial infection of a hair follicle of the eyelid. It most often involves the eyelash follicle (external hordeolum) and presents as a tender, red bump at the eyelid margin, sometimes with pus. The other structures listed don’t fit this focal follicle infection: infection of the conjunctiva causes conjunctivitis with diffuse eye redness and discharge, while infection of the lacrimal gland leads to dacryoadenitis with swelling near the outer upper eyelid and tearing. Blepharitis affects the eyelid margin more broadly but isn’t defined by a single lash follicle infection.

A sty is a localized bacterial infection of a hair follicle of the eyelid. It most often involves the eyelash follicle (external hordeolum) and presents as a tender, red bump at the eyelid margin, sometimes with pus. The other structures listed don’t fit this focal follicle infection: infection of the conjunctiva causes conjunctivitis with diffuse eye redness and discharge, while infection of the lacrimal gland leads to dacryoadenitis with swelling near the outer upper eyelid and tearing. Blepharitis affects the eyelid margin more broadly but isn’t defined by a single lash follicle infection.

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