Dermatitis, Allergic ContactNorth AmericaPatch TestsDermatitis, OccupationalDermatitis, AtopicDermatitis, IrritantDermatitisDermatitis, ContactIrritantsOxazoloneDinitrofluorobenzeneDermatitis HerpetiformisSouth AmericaCosmeticsDermatitis, ToxicodendronLocal Lymph Node AssaySkinPhenylenediaminesFacial DermatosesAmericasDermatitis, SeborrheicHaptensNickelLatin AmericaSkin CreamAllergensPerfumeLawsonia PlantLaboratory ChemicalsCentral AmericaDesonideInkGloves, ProtectiveHand DermatosesEczemaEpoxy ResinsConstruction IndustryDinitrochlorobenzenePicryl ChlorideEar, ExternalCroton OilAdministration, TopicalPruritusAcrylatesPetrolatumLangerhans CellsDrug EruptionsTattooingHair DyesNorth CarolinaPreservatives, PharmaceuticalKeratinocytesUrticariaAdministration, CutaneousSkin TestsPhylogenyHypersensitivityDermatitis, PerioralDermatitis, ExfoliativeEuropeGeographyNorth SeaChromiumContact LensesRadiodermatitisDisease Models, AnimalFossilsPhylogeographyMice, Inbred BALB CImmunoglobulin EDermatologic AgentsAsiaGenetic VariationSkin Diseases, ParasiticContact TracingSchistosomatidaeEmollientsCytokinesCanadaDigital DermatitisSequence Analysis, DNAMolecular Sequence Data