Delusions of parasitosis (DoP) manifest in the patient's firm belief that he or she has pruritus due to an infestation with insects. Patients may ...ForYouNews&PerspectiveDrugs&DiseasesCME&EducationAcademyVideoDecisionPointEdition:ENGLISHDEUTSCHESPAÑOLFRANÇAISPORTUGUÊSLogInSignUpIt'sFree!Edition:ENGLISHDEUTSCHESPAÑOLFRANÇAISPORTUGUÊSRegisterLogInNoResultsNoResultsForYouNews&PerspectiveDrugs&DiseasesCME&EducationAcademyVideoDecisionPointclosePleaseconfirmthatyouwouldliketologoutofMedscape.Ifyoulogout,youwillberequiredtoenteryourusernameandpasswordthenexttimeyouvisit.LogoutCancelhttps://profreg.medscape.com/px/getpracticeprofile.do?method=getProfessionalProfile&urlCache=aHR0cHM6Ly9lbWVkaWNpbmUubWVkc2NhcGUuY29tL2FydGljbGUvMTEyMTgxOC1vdmVydmlldw==processing....Drugs&Diseases>PsychiatryDelusionsofParasitosisUpdated:Jul18,2018Author:BettinaEBernstein,DO;ChiefEditor:GlenLXiong,MD more...ShareEmailPrintFeedbackCloseFacebookTwitterLinkedInGoogle+SectionsDelusionsofParasitosisSectionsDelusionsofParasitosisOverviewBackgroundPathophysiologyEpidemiologyShowAllPresentationHistoryPhysicalShowAllDDxWorkupLaboratoryStudiesImagingStudiesHistologicFindingsShowAllTreatmentMedicalCareConsultationsShowAllMedicationMedicationSummaryAntipsychoticsShowAllFollow-upFurtherOutpatientCareComplicationsPrognosisPatientEducationShowAllReferencesOverviewBackgroundDelusionsofparasitosis(DoP)manifestinthepatient'sfirmbeliefthatheorshehaspruritusduetoaninfestationwithinsects.Patientsmaypresentwithclothinglint,piecesofskin,orotherdebriscontainedinplasticwrap,onadhesivetape,orinmatchboxes.Theytypicallystatethatthesecontaintheparasites;however,thesecollectionshavenoinsectsorparasites.Thispresentationiscalledthematchboxsign,orwhattheauthorstermthe"Saran-wrapsign."Thepatientshavenoobviouscognitiveimpairment,andabnormalorganicfactorsareabsent.Trueinfestationsandprimarysystemicdiseasesthatcausepruritusarenotinvolved.Primaryskinlesionsarenotpresent.Physicalexaminationmayrevealnolesions,butonlylinearerosionswi