A stye (or hordeolum) is an inflamed oil gland noted on the margin of the eyelid at the level of the eyelashes or in the midportion of the eyelid.TheAcademyusescookiestoanalyzeperformanceandproviderelevantpersonalizedcontenttousersofourwebsite. LearnmoreCreateaccountLoginMainpageArticlesGettingStartedHelpRecentchangesMyPortalPageDiscussionViewformViewsourceHistoryStyeFromEyeWikiJumpto:navigation,searchEnrollintheResidentsandFellowscontestEnrollintheInternationalOphthalmologistscontestResidentsandFellowscontestrules|InternationalOphthalmologistscontestrulesOriginalarticlecontributedby:SamuelBaharestani,MDAllcontributors:SamuelBaharestani, Dr.KabirHossain, MarcusM.Marcet,MD, RonaZSilkiss,MDFACS, CatNguyenBurkat,MDFACSAssignededitor:RonaZSilkiss,MDFACSReview:AssignedstatusUptoDate byRonaZSilkiss,MDFACSonJanuary17,2021.addContributingEditors:addStyeExternalhordeolum(orstye)oftheleftuppereyelid.Fluoresceindyefromtheocularexaminationisseenonthelowereyelid.ImagecourtesyofMarcusM.Marcet,MDFACS.(cc-by-sa-3.0)DiseasesDB12583ICD-10H00.0Contents1DiseaseEntity1.1Etiology1.2Pathophysiology1.3Primaryprevention2Diagnosis2.1History2.2Physicalexamination2.3Differentialdiagnosis3Management3.1Medicaltherapy3.2Surgery3.3Complications4AdditionalResources5ReferencesDiseaseEntityAstye(orhordeolum)isaninflamedoilglandnotedonthemarginoftheeyelidattheleveloftheeyelashesorinthemidportionoftheeyelid.Itappearsasared,swollennodulethatresemblesapimpleinappearance.Itissometimestenderinitsacutepresentation,especiallytothetouch.Hordeolamaybeontheexternalorinternalsurfaceoftheeyelidandmayleadtoedemaoftheentirelid.IftheyareexternaltheyoriginatefromtheglandsofZeissorMoll.Iftheyareinternal,theyoriginatefromthemeibomianglands.Attimes,purulentmaterialisreleasedfromtheoutereyelashlineinexternalhordeola,whileinternalhordeolaexudeontheinnerconjunctivalsurfaceofeyelid.Astyethatischronicorlongstandingislikelytobeachalazion;apainlessbutsometimestenderinflammationofthemeibomianoilglandsoftheeyelid.EtiologyAstyeis