Chlamydia is caused by bacteria. It is one of the most common sexually transmitted diseases in the U.S. This infection is easily spread because it often ...MedicalReferenceFeaturesSlideshows&ImagesNewsArchiveSexualConditionsHomeNewsReferenceSlideshowsQuizzesVideosQuestions&AnswersFindaDoctorWebMDRxSavingsCardBasicFactsTypes&CausesTreatmentsPreventionFindingHelpRelatedtoSexualConditionsBirthControlChlamydiaErectileDysfunctionGenitalHerpesHepatitisCHIV/AIDSHPV/GenitalWartsLowT&SexDriveSafeSexSexHeadachesSexTherapySexualHealthWebMDConnecttoCare:TestsforSTDsMoreRelatedTopicsSexualConditionsReferenceInthisArticleInthisArticleInthisArticleWhatIsChlamydia?ChlamydiaSymptomsChlamydiaCausesChlamydiaDiagnosisChlamydiaTreatmentsChlamydiaComplicationsChlamydiaPreventionWhatIsChlamydia?Chlamydiaiscausedbybacteria.ItisoneofthemostcommonsexuallytransmitteddiseasesintheU.S.Thisinfectioniseasilyspreadbecauseitoftencausesnosymptoms.Thatmeansyoucanpasschlamydiatosexualpartnerswithoutknowingit.Infact,about75%ofinfectionsinwomenand50%inmenhavenosymptoms.Ifyoudon’ttreatit,chlamydiacancauseseriouscomplications.ChlamydiaSymptomsIfyoudogetchlamydiasymptoms,theyusuallyshowupwithin1to3weeksaftercontact.ChlamydiasymptomsinwomenAbnormalvaginaldischargethatmayhaveanodorBleedingbetweenperiodsPainfulperiodsAbdominalpainwithfeverPainwhenyouhavesexItchingorburninginoraroundyourvaginaPainwhenyoupeeChlamydiasymptomsinmenSmallamountsofclearorcloudydischargefromthetipofyourpenisPainfulurinationBurninganditchingaroundtheopeningofyourpenisPainandswellingaroundyourtesticlesUnprotectedsexcanalsoleadtochlamydiainotherbodypartslikeyouranus,throat,andeyes.Symptomsinclude:Anus:DiscomfortanddischargeThroat:ThereusuallyarenosymptomsEyes:Redness,pain,anddischargeChlamydiaCausesChlamydiatrachomatis,thebacteriathatcauseschlamydia,mostoftenspreadsthroughunprotectedvaginal,oral,oranalsex.Yougetitfromthesemenorvaginalfluidofaninfectedperson.Itcanalsopassfromaninfectedpersontoanotherthroughgenitalcontact,evenifthere’snos