What Is a Chalazion? A chalazion is a small swelling or lump on your eyelid because of a blocked gland. They're called chalazia if you have ...MenuNewsReferenceSlideshowsQuizzesVideosQuestions&AnswersFindanOphthalmologistEyelidProblemsandInjuriesEyelidDroopingTrichasisBlepharitis(EyeInflammation)BlepharitisTreatmentChalazionStyeLASIKVisionProblemsCommonEyeProblemsPinkeye-ConjunctivitisGlaucomaStyesPupil&IrisProblemsCataractsMacularDegenerationEyelidProblemsChildren'sEyeHealthOcularMigrainesMoreRelatedTopicsEyeHealthReferenceMenuReviewedbyWhitneySeltmanonApril23,2020ArticlesOnEyelidProblemsEyelidProblemsandInjuriesEyelidDroopingTrichasisBlepharitis(EyeInflammation)BlepharitisTreatmentChalazionStyeWhatIsaChalazion?Achalazionisasmallswellingorlumponyoureyelidbecauseofablockedgland.They’recalledchalaziaifyouhavemorethanone.Achalazionisoneofthemostcommontypesofeyelidlumps.Chalaziaaremostlikelytohappenonyouruppereyelid.Youcangetthemonbotheyesatonce.Chalaziaoftengoawayandcomeback.ChalazionSymptomsAchalazionstartswithasmallareathatmaybered,swollen,andsoreorpainfulwhentouched.Afterafewdays,thepainusuallygoesaway,andabumporlumpremains.Youmayalsohave:WateryeyesMildeyeirritationBlurryvisionChalazionCausesYouhaveglandsthroughoutyourbody.Theymakethingsthatyourcells,tissues,andorgansneedtoworkthewaytheyshould.Themeibomianglandsinyourupperandlowereyelidsmakeoilthatmixeswithyourtearstomoistenandprotectyoureyes.Iftheoilgetstoothickoriftheglandsareblockedbecauseofinflammation,youmaygetachalazion.Rarely,aninfectioncancauseachalazion.ChalazionRiskFactorsChalaziahappenmoreofteninadultsthanchildren.Theymightbemorelikelyifyouhave:Eyelidinflammation(blepharitis)AskinconditionlikeseborrheicdermatitisoracnerosaceaAnotherhealthconditionsuchasdiabetesHadachalazionbeforeChalazionvs.StyeItcanbehardtotellachalazionfromastye,anotherkindofeyelidbumpthat’scausedbyaninfection.Styeshappenalongtheedgeofyoureyelid,sometimesinthebaseofaneyelash,butchalaziaareusuallytowardthemiddleofthelid.Astyeismorelikel