NowschedulingCOVID-19vaccineappointmentsforages16+LearnhowtoscheduleCOVID-19vaccineFAQsNewvisitationhoursNeedaCOVID-19testbeforetravel,schoolorchildcare?Home/HealthLibrary/Disease&ConditionsSty(Stye)Astyisared,painfulbumpthatformseitheronorinsidetheeyelidneartheedgeoftheeyelashes.Styesareverycommonandusuallydisappearontheirownorwithhomeselfcare.Appointments216.444.2020Appointments&LocationsContactUsOverviewSymptomsandCausesDiagnosisandTestsManagementandTreatmentPreventionLivingWithSty(Stye)OverviewSymptomsandCausesDiagnosisandTestsManagementandTreatmentPreventionLivingWithBackToTopOverviewAstyisared,painfulbumpthatformseitheronorinsidetheeyelidneartheedgeoftheeyelashes.Whatisasty?Asty(sometimesspelled“stye”)isared,painfulbumpthatformseitheronorinsidetheeyelidneartheedgeoftheeyelashes.Astythatappearsontheoutsideoftheupperorlowereyelid,themoreusuallocation,iscalledanexternalsty.Astythatappearsontheinsideoftheupperorlowereyelidiscalledaninternalsty.Astycanlooklikeanacnepimple.Themedicaltermforastyisahordeolum.Astyissimilartoanotherbumpthatoccursintheeyelidcalledachalazion.Achalazionisabumpthatusuallyoccursfartherbackontheeyelid.Unlikeasty,achalazionisusuallynotpainfulandisnotcausedbyabacterialinfection.Instead,achalazionoccurswhentheopeningoftheoil-producingglandsintheeyelidbecomesclogged.Treatmentforbothconditions,however,issimilar.SymptomsandCausesWhatcausesasty?Astyiscausedbyabacterialinfectionintheoil-producingglandsintheeyelid.Oil-producingglandslinetheeyelidsandhelplubricatethesurfaceoftheeye.Whatarethesignsandsymptomsofasty?Signsandsymptomsofastyinclude:PainfulredbumpalongtheedgeoftheupperorlowereyelidnearthebaseoftheeyelashesSwellingoftheeyelid(sometimestheentireeyelid)CrustingalongtheeyelidSensitivitytobrightlightSore,scratchyeyeTearingoftheeyeAfeelingthatthereissomethingintheeyeDiagnosisandTestsHowisastydiagnosed?Astyisusuallydiagnosedbyavisualexamoftheeyelid.Whataretheriskfactorsfordevelopingasty?Styesareverycommon.Anyonecangetasty.However,youmaybemorelikely