DementiaDementia, VascularAlzheimer DiseaseDementia, Multi-InfarctLewy Body DiseaseCognition DisordersNeuropsychological TestsAIDS Dementia ComplexCaregiversDepressionBehavioral SymptomsPsychiatric Status Rating ScalesSeverity of Illness IndexBrainLongitudinal StudiesAtrophyCognitionMild Cognitive ImpairmentRisk FactorsNursing HomesSymptom AssessmentParkinson DiseaseMagnetic Resonance ImagingQuestionnairesFollow-Up StudiesPrevalenceProspective StudiesGeriatric AssessmentLewy BodiesCohort StudiesMemory DisordersPsychomotor Agitationtau ProteinsApolipoprotein E4Frontotemporal Lobar DegenerationNeurofibrillary TanglesPick Disease of the BrainCross-Sectional StudiesAgingDisease ProgressionTreatment OutcomeActivities of Daily LivingAge FactorsHomes for the AgedQuality of LifeTime FactorsCholinesterase InhibitorsAge of OnsetHallucinationsDepressive DisorderComorbidityRetrospective StudiesPsychometricsWandering BehaviorIncidenceTemporal LobeInstitutionalizationPredictive Value of TestsReproducibility of ResultsAutopsyAnxietyFrontal LobeCase-Control StudiesNootropic AgentsAffective SymptomsBrief Psychiatric Rating ScalePlaque, AmyloidStress, PsychologicalAmyloid beta-PeptidesResidential FacilitiesDelirium, Dementia, Amnestic, Cognitive DisordersSex FactorsApathyNeurodegenerative DiseasesAnalysis of VariancePsychological TestsMental CompetencyAphasia, Primary ProgressiveEducational StatusUnited StatesCerebrovascular DisordersLogistic ModelsMental DisordersAntipsychotic AgentsSensitivity and SpecificityPsychotic DisordersSupranuclear Palsy, ProgressiveBehaviorEarly DiagnosisGeriatric NursingCerebral CortexMemoryDelusionsDiagnostic and Statistical Manual of Mental DisordersDeliriumAphasiaDiagnostic Techniques, NeurologicalRegression AnalysisSchizophreniaFatigue