Symptom AssessmentDepressionQuestionnairesSeverity of Illness IndexBehavioral SymptomsPsychiatric Status Rating ScalesTreatment OutcomeAffective SymptomsQuality of LifeProspective StudiesPrevalenceFollow-Up StudiesAnxietyDepressive DisorderTime FactorsRisk FactorsCross-Sectional StudiesStress Disorders, Post-TraumaticFatigueLongitudinal StudiesAsthmaRespiration DisordersSchizophreniaStress, PsychologicalRetrospective StudiesCoughLower Urinary Tract SymptomsPainGastroesophageal RefluxSchizophrenic PsychologyPsychotic DisordersGastrointestinal DiseasesOccupational DiseasesPsychometricsUrination DisordersRespiratory Tract DiseasesComorbiditySex FactorsPsychophysiologic DisordersHeadacheRespiratory SoundsChronic DiseaseCohort StudiesAge FactorsPersonality InventoryProdromal SymptomsHot FlashesDyspneaDyspepsiaMagnetic Resonance ImagingAdaptation, PsychologicalIrritable Bowel SyndromeAnxiety DisordersHallucinationsConstipationDelusionsDepressive Disorder, MajorDiagnostic and Statistical Manual of Mental DisordersLogistic ModelsHealth StatusOccupational ExposurePain MeasurementRecurrenceLife Change EventsFlatulenceAcute DiseasePredictive Value of TestsNeuropsychological TestsSleep DisordersSyndromeAffectRegression AnalysisSelf ReportTomography, X-Ray ComputedHeartburnAntipsychotic AgentsCognitive TherapyAnalysis of VarianceRhinitisCognition DisordersAttention Deficit Disorder with HyperactivityMental DisordersReproducibility of ResultsCase-Control StudiesUnited StatesPremenstrual SyndromeHealth SurveysIrritable MoodPrognosisRhinitis, Allergic, SeasonalActivities of Daily LivingObsessive-Compulsive DisorderFactor Analysis, StatisticalSleep Initiation and Maintenance DisordersSocioeconomic FactorsMusculoskeletal DiseasesDisease ProgressionBipolar DisorderPilot ProjectsInterview, Psychological