420nm~950nm强脉冲光治疗寻常性痤疮疗效观察的开题报告Title:EfficacyEvaluationofIntensePulsedLightTherapyintheTreatmentofAcneVulgarisintheWavelengthRangeof420nm~950nmIntroduction:Acnevulgarisisacommonskinconditionaffectingmillionsofpeopleworldwide,especiallyteenagersandyoungadults.Theconventionaltreatmentmethodsincludetopicalandoralmedications,buttheyoftenhavesideeffectsandarenotalwayseffective.IntensePulsedLight(IPL)therapyisanon-invasiveandsafealternativetoconventionaltreatmentsthathasgainedpopularityinrecentyears.IPLtherapydeliversshortpulsesofbroadbandlightthatpenetratetheskinandtargetthebacteriacausingacne.However,thereislimitedresearchontheefficacyofIPLtherapyintreatingacnevulgarisinthespecificwavelengthrangeof420nm~950nm.Therefore,thisstudyaimstoevaluatethetherapeuticefficacyofIPLtherapyinthetreatmentofacnevulgaris.Methods:Thisstudywillbearandomizedcontrolledtrialof60patientswithacnevulgaris.Thepatientswillberandomlyassignedintotwogroups;theexperimentalgroup(n=30)willreceive6sessionsofIPLtherapyat4-weekintervals,whilethecontrolgroup(n=30)willreceiveaplacebotreatmentwithnolightexposure.TheIPLdeviceusedinthisstudywillemitlightinthewavelengthrangeof420nmto950nmwithapulsedurationof20msandafluenceof20J/cm^2.TheprimaryoutcomemeasurewillbethechangeintheacnelesioncountusingtheGlobalAcneGradingSystem(GAGS)scoreattheendofthetreatmentand6weekspost-treatment.ThesecondaryoutcomemeasurewillbetheimprovementintheQualityofLife(QOL)ofpatientsmeasuredusingtheDermatologyLifeQualityIndex(DLQI)questionnaire.Results:Theresultsofthisstudywillbeevaluatedusingstatisticalanalysis.Descriptivestatisticswillbeusedtosummarizethedemographicdataofthestudypopulation,whileIndependentStudentt-testandpairedt-testwillbeusedtocomparethedifferencesbetweenthetwogroupsandwithinthegroups.ThesignificancelevelwillbesetatP<0.05forallstatisticaltests.Conclusion:TheresultsofthisstudywillcontributetotheknowledgeoftheefficacyofIPLtherapyinthetreatmentofacnevulgaris.Thismayleadtoanalternativeandmoreeffectivetreatmentoption