Dermatitis, SeborrheicDermatologyDandruffScalp DermatosesMalasseziaHair PreparationsSebumScalpSkin DiseasesKeratolytic AgentsAntipruriticsSebaceous GlandsDermoscopyPityriasisAcne VulgarisEyelashesEye Infections, ParasiticMite InfestationsTrichotillomaniaHand DermatosesDermatitis, OccupationalWater Loss, InsensiblePruritusDermatologic AgentsPsoriasisSkin NeoplasmsSkin AgingNevus, PigmentedNail DiseasesPigmentation DisordersSelf-ExaminationPhototherapyNailsRejuvenationUltraviolet TherapyPhysicians' OfficesBleaching AgentsFoot DermatosesOnychomycosisProfessional PracticeAlopecia AreataKeratosisCosmetic TechniquesDermatitis, AtopicFacial DermatosesHyperpigmentationPhotographyDrug EruptionsArthritis, PsoriaticSkin CareMolluscum ContagiosumScabiesKeratosis, ActinicEczemaMelanomaOffice VisitsNevusDysplastic Nevus SyndromeSkinErythemaAlopeciaAdministration, TopicalCarcinoma, Basal CellSunlightSeverity of Illness IndexCross-Sectional StudiesPhysiciansBiopsyPhysician's Practice PatternsQuestionnairesReferral and ConsultationHealth Care SurveysUnited StatesReproducibility of ResultsObserver VariationFamily Practice