Last Updated: 2013-04-03
Stye (hordeolum) is an acute infectious process involving abscess formation at the upper or lower eyelid.
The most commonly involved bacterial pathogen is Staphylococcus aureus.
Chalazion is an inflammatory condition caused by a foreign body reaction to sebum released by meibomian glands.
Styes are typically tender to palpation, while chalazia are not.
Dacryoadenitis and dacryocystitis can be confused with stye; their respective locations (lateral upper lid and inferior to the medial epicanthus) are key.
Most styes and chalazia resolve with warm compresses and topical antibiotics.
Recurrent lesions may require biopsy to exclude carcinomas. Recurrent chalazia may require excision.
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