-IBIS-1.5.0-
tx
eyes/ears/nose/throat
sty
diagnoses
definition and etiology
definition: An acute localized pus-forming infection of either the meibomian glands (internal sty) or the glands of Zeis or Moll (external sty). Medical term is "hordeolum".
etiology: The usual bacterial agent is Staphylococcus. Hordeoli are associated with blepharitis.
signs and symptoms
Internal sty: occurs on the underside of the lid next to the conjunctiva.
Pain.
Redness.
Edema.
Small yellow area or elevation of the lid on the conjunctival side: usually an abscess develops at that spot, though it rarely spontaneously suppurates.
External sty: occurs on the lid margin.
Pain.
Redness.
Tenderness.
Formation of a small area of induration: it develops a yellow spot ("pointing") that eventually is the area through which the abscess ruptures, bringing relief of pain.
Local edema.
Occasional photophobia and/or lacrimation.
course and prognosis
Normally resolve quickly, but recurrences are common.
differential diagnosis
Chalazion.
Blepharitis.
footnotes