AspirinAnti-Inflammatory Agents, Non-SteroidalPainPain ManagementChronic PainCyclooxygenase InhibitorsPain, PostoperativeCyclooxygenase 2 InhibitorsPain ThresholdIbuprofenLow Back PainPain MeasurementBack PainPlatelet Aggregation InhibitorsPain, IntractableNaproxenDiclofenacAbdominal PainNeck PainPelvic PainPain PerceptionFacial PainProstaglandin-Endoperoxide SynthasesAcute PainAcetaminophenPain, ReferredGastrointestinal DiseasesCyclooxygenase 1Cyclooxygenase 2AnalgesicsIndomethacinKetoprofenAnalgesics, Non-NarcoticShoulder PainThromboxane B2SalicylatesSulfonamidesGastrointestinal HemorrhageMusculoskeletal PainPyrazolesPiroxicamTiclopidineSulindacSulfonesDrug Therapy, CombinationStomach UlcerEtodolacTreatment OutcomeLactonesThiazinesPlatelet AggregationRisk FactorsDouble-Blind MethodNitrobenzenesProspective StudiesPlatelet Function TestsOsteoarthritisPeptic UlcerAnalgesics, OpioidDose-Response Relationship, DrugGastric MucosaSodium SalicylateNociceptive PainNeuralgiaChronic DiseasePeptic Ulcer HemorrhageDinoprostoneTime FactorsBlood PlateletsAsthma, Aspirin-InducedDrug InteractionsProstaglandinsHyperalgesiaIsoenzymesTablets, Enteric-CoatedDrug HypersensitivityArthritisKetorolacAnticoagulantsArthralgiaSafety-Based Drug WithdrawalsFibrinolytic AgentsRandomized Controlled Trials as TopicFollow-Up StudiesAnalgesiaWarfarinMyofascial Pain SyndromesHemorrhageQuestionnairesComplex Regional Pain SyndromesVisceral PainCohort StudiesCase-Control StudiesAnti-Ulcer AgentsRisk AssessmentMisoprostolChemopreventionThrombosisProton Pump InhibitorsBleeding Time