A hordeolum (stye) is an acute, localized swelling of the eyelid that may be external or internal and usually is a pyogenic (typically staphylococcal) infection or ...MSDManualPleaseconfirmthatyouareahealthcareprofessionalYesNoLeavethisSite?Thelinkyouhaveselectedwilltakeyoutoathird-partywebsite.Wedonotcontrolorhaveresponsibilityforthecontentofanythird-partysite.ContinueCancelhoneypotlinkHOMEMEDICALTOPICSCommonHealthTopicsCardiovascularDisordersClinicalPharmacologyCriticalCareMedicineDentalDisordersDermatologicDisordersEar,Nose,andThroatDisordersEndocrineandMetabolicDisordersEyeDisordersGastrointestinalDisordersGenitourinaryDisordersGeriatricsGynecologyandObstetricsHealthandWellnessHematologyandOncologyHepaticandBiliaryDisordersImmunology;AllergicDisordersInfectiousDiseasesInjuries;PoisoningMusculoskeletalandConnectiveTissueDisordersNeurologicDisordersNutritionalDisordersPediatricsPsychiatricDisordersPulmonaryDisordersSpecialSubjectsResourcesVideosFiguresImagesQuizzesViewAllResourcesRESOURCES3DModelsAbbreviationsLabTestsAudioCaseStudiesClinicalCalculatorsConversionTablesFiguresImagesLabValuesQuizzesTablesVideosNEWSAIModelDetectsNormal,AbnormalFindingsonBrainMRIBidenAdministrationtoBackLiftingofCOVID-19VaccinePatentsCannabisUseDisorderinPregnancyTiedtoWorseInfantOutcomesCDCGivesCruiseShipLinesGuidelinesforSimulatedVoyagesViewAllNews>ViewAllNews>PROCEDURESTheVaginalExaminLaborUterineCompressionUterineBalloonTamponadeViewAllProcedures>ViewAllProcedures>QUIZZES&CASESQuizzesMoreQuizzesCasesMoreCaseStudiesABOUTOverviewHistoryEditorsandtheEditorialProcessPublishingandProductionStaffEditorialBoardContributorsReviewersContentProvidersGlobalMedicalKnowledgeFAQContactUsMedicalTopics&ChaptersABCDEFGHIJKLMNOPQRSTUVWXYZProfessional/EyeDisorders/EyelidandLacrimalDisorders/.../ChalazionandHordeolum(Stye)/INTHISTOPICChalazionHordeolumSymptomsandSignsChalazionHordeolumDiagnosisTreatmentChalazionHordeolumKeyPointsOTHERTOPICSINTHISCHAPTEREyelidandLacrimalDisordersBlepharitisBlepharospas