AspirinPainChronic PainPain ManagementPain ThresholdPain, PostoperativeLow Back PainBack PainPlatelet Aggregation InhibitorsPain MeasurementAnti-Inflammatory Agents, Non-SteroidalAbdominal PainNeck PainPain, IntractablePelvic PainPain PerceptionFacial PainAcute PainPain, ReferredShoulder PainMusculoskeletal PainTiclopidineThromboxane B2Cyclooxygenase InhibitorsAnalgesicsPlatelet AggregationSalicylatesPlatelet Function TestsNociceptive PainTreatment OutcomeNeuralgiaDrug Therapy, CombinationDouble-Blind MethodBlood PlateletsChronic DiseaseAnalgesics, OpioidProspective StudiesSodium SalicylateFibrinolytic AgentsMyofascial Pain SyndromesHyperalgesiaTime FactorsHemorrhageComplex Regional Pain SyndromesVisceral PainDose-Response Relationship, DrugIbuprofenAsthma, Aspirin-InducedAnticoagulantsWarfarinTablets, Enteric-CoatedAcetaminophenCyclooxygenase 1Risk FactorsGastrointestinal HemorrhageFollow-Up StudiesArthralgiaProstaglandin-Endoperoxide SynthasesBleeding TimePlatelet ActivationAnalgesiaLabor PainCyclooxygenase 2 InhibitorsThromboxanesQuestionnairesThromboxane A2ThrombosisDipyridamoleAnalgesics, Non-NarcoticMyocardial InfarctionNociceptorsLipoxinsIndomethacinNaproxenDrug ResistanceCyclooxygenase 2FibromyalgiaAnesthetics, LocalStrokeGastric MucosaDisability EvaluationSulfinpyrazoneCatastrophizationStomach UlcerRandomized Controlled Trials as TopicFlank PainDrug Administration ScheduleReye SyndromeProstaglandinsSeverity of Illness IndexRecurrenceCohort StudiesRetrospective StudiesEye PainDinoprostoneDrug Interactions