Hordeolum (Stye)
A hordeolum is an acute purulent inflammation of the eyelid, most commonly due to Staphylococcus aureus, that comes in two forms.
The appearance of an acute painful, erythematous, and purulent nodule can be worrying to patients, but the condition typically resolves after 1–2 weeks.
Tx
Warm compresses
If not responding after 48 hours, then perform I&D
DDx - dacryocystis, which can have similar presentation;
However, unlike stye, which arises from the upper eyelid, dacryocystitis arises from the lacrimal sac, which is located below the medial canthus of the eye.
Chalazion
initially presents as a painful swelling (hordeolum) that progresses to a nodular rubbery lesion
This is a chronic granulomatous condition that develops when a meibomian gland becomes obstructed.
Patients with rosacea may experience ocular symptoms. Complications frequently include a burning or foreign body sensation, blepharitis, keratitis, conjunctivitis, episcleritis, and recurrent chalazion.
Persistent or recurrent chalazion may be due to meibomian gland carcinoma (sebaceous carcinoma).
Additionally, BCC frequently presents as a solitary nodule on the lid margin, and may initially be clinically difficult to distinguish from a chalazions.
Mx
Histopathologic examination to rule out malignancy
Direct steroid injection
Incision and curettage