What is a chalazion? A chalazion is a red bump on your eyelid. It is sometimes called an eyelid cyst or a meibomian cyst. It slowly forms when an ...NowschedulingCOVID-19vaccineappointmentsforages16+LearnhowtoscheduleCOVID-19vaccineFAQsNewvisitationhoursNeedaCOVID-19testbeforetravel,schoolorchildcare?Home/HealthLibrary/Disease&ConditionsChalazionYoureyelidhastinyglandsthatproduceanoilysubstancetohelpkeepyoureyesmoist.Whenoneofthoseglandsgetsblocked,youcanwindupwithachalazion,aswollen,pain-freegland.Usuallyyoucantreatachalazionathome.Appointments&AccessContactUsOverviewSymptomsandCausesDiagnosisandTestsManagementandTreatmentPreventionOutlook/PrognosisLivingWithChalazionOverviewSymptomsandCausesDiagnosisandTestsManagementandTreatmentPreventionOutlook/PrognosisLivingWithBackToTopOverviewAchalazionisasmallswellingorlumpintheeyelid.Whatisachalazion?Achalazionisaredbumponyoureyelid.Itissometimescalledaneyelidcystorameibomiancyst.Itslowlyformswhenanoilgland(calledameibomian)becomesblocked.Atfirst,thechalazionmaybepainful,butafteralittletime,itusuallydoesn’thurt.Achalazionusuallyformsontheuppereyelidsbutmayoccasionallyformonthelowereyelid.Ordinarily,chalazia(thepluralofchalazion)developinadultsbetweentheagesof30and50.Theyarenotcommoninchildren,buttheycanhappen.Isachalazionastye?Achalazionisnotastye,butitcanformbecauseofastye.Styesarebacterialinfectionsthatcausetheglandtoswell.Styescanbepainful.Achalaziongenerallyisn’tpainfulandappearsfartherbackontheeyelid.SymptomsandCausesWhatcauseschalazia?Chalaziamaydevelopwhensomethingblocksasmalloilglandintheeyelid.Theseglandshelpkeeptheeyemoist.Ablockedglandbeginsretainingoilandswells.Eventually,thefluidwilldrain,andyoumayhaveahardlumponyoureyelid.Someadditionalcausesofchalaziaare:Rosacea(askinconditionthatcausesrednessandacne).Chronicblepharitis,eyelidinflammation(redness,swellingandirritation).Seborrheicdermatitis(red,dry,flakyanditchyskin).Tuberculosis(TB).Viralinfections.Whatarethesymptomsofachalazion?Whenyouhaveachalazion,youwill