Free preview

Hordeolum (Stye)

Overview and clinical definition are open. Full Step 1 details unlock with a plan.

For the why behind the fact

Use this page to connect what you are memorizing.

Start with the overview when a class slide, Anki card, or qbank explanation feels too thin. Then use presentation and workup to recognize the condition, and differentials to separate look-alikes.

Overview


Plain-Language Overview

Hordeolum (Stye) is a common eye condition that affects the eyelid. It occurs when a small gland near the base of the eyelashes becomes infected, usually by bacteria like Staphylococcus aureus. This infection causes a red, painful bump that looks like a pimple or boil on the eyelid. The affected area may swell and become tender, making it uncomfortable to blink or touch. Although it mainly affects the skin of the eyelid, it can cause irritation and sometimes blurry vision if swelling is significant. The condition typically resolves on its own but can cause discomfort and cosmetic concern while present.

Clinical Definition

Hordeolum (Stye) is an acute, localized infection of the eyelid glands, most commonly the sebaceous glands of Zeis or the apocrine glands of Moll. It is primarily caused by bacterial infection, predominantly Staphylococcus aureus, leading to a suppurative inflammation. The infection results in a tender, erythematous nodule on the eyelid margin, often with a visible central pustule. Hordeola are classified as either external (involving glands of Zeis or Moll) or internal (involving the meibomian glands). The condition is significant due to its potential to cause pain, eyelid swelling, and secondary complications such as cellulitis or chalazion formation if untreated. Diagnosis is clinical, based on characteristic signs and symptoms.

Clinical Presentation


Diagnostic Workup


Pathophysiology


Treatments


Prevention


Outcome & Complications


Differential Diagnoses