Abdominal PainPainChronic PainPain ManagementPain ThresholdPain, PostoperativeBack PainLow Back PainPain MeasurementPain, IntractableNeck PainPelvic PainPain PerceptionAbdomen, AcuteAcute PainFacial PainPain, ReferredShoulder PainMusculoskeletal PainAppendicitisAnalgesicsIrritable Bowel SyndromeChronic DiseaseNociceptive PainGastrointestinal DiseasesNeuralgiaTreatment OutcomeVisceral PainConstipationAnalgesics, OpioidIleal DiseasesAbdomenTorsion AbnormalityTomography, X-Ray ComputedHyperalgesiaMyofascial Pain SyndromesComplex Regional Pain SyndromesColonic Diseases, FunctionalArthralgiaIntestinal ObstructionRadiography, AbdominalProspective StudiesPancreatitisQuestionnairesColitis, IschemicAnalgesiaIntestinal PerforationLabor PainCecal DiseasesAcute DiseaseRetrospective StudiesIntussusceptionDouble-Blind MethodJejunal DiseasesFlank PainPancreatitis, ChronicFollow-Up StudiesSeverity of Illness IndexRupture, SpontaneousColonic DiseasesLaparotomyNociceptorsAppendectomyFlatulenceVomitingDiarrheaLaparoscopyTime FactorsEndoscopy, Digestive SystemRecurrenceHemoperitoneumColicAppendixFibromyalgiaAnesthetics, LocalHeadacheDisability EvaluationMesenteric Vascular OcclusionCatastrophizationDiagnostic ErrorsDiverticulitisDefecationCholecystitisMorphineFatal OutcomeEndoscopy, GastrointestinalColonoscopyEye PainQuality of LifeMesenteric LymphadenitisPeritonitis, TuberculousDuodenal DiseasesIntestinal DiseasesVisceral AfferentsHymenAnalgesics, Non-NarcoticPrevalencePhysical ExaminationHematocolposMesenteric Artery, Superior