PTSDandchronicpainarehighlyprevalentandeachisassociatedwithlong-termdisabilityand substanceabuse,exactingenormousemotional,functional,andfinancialtollsonindividualsandsociety. PTSDandchronicpainarefrequentlyco-morbidwithoverlapbetween20%and70%,representingan enormouspublichealthproblem.However,ourunderstandingofthemechanismsbywhichPTSDandchronic painbecomeintertwinedislimited.ThemajorityofstudiesofthePTSD/chronicpainco-morbidityarecross- sectional,andfocusedonasinglechronicpaincondition,limitingcausalinferencesandgeneralizabilityto otherchronicpainconditions.Chronicpainisalsorelatedtoahighprevalenceofsubstanceabuse.To understandhowtrauma-relatedPTSD,andresilienceandvulnerabilityfactorscontributetothetransitionfrom acutetochronicpainanddevelopmentofsubstanceabuserequiresprospectivedesigns.Suchresearchis vitalamonginner-cityAfricanAmericanwomen,whoaremorelikelytoexperiencetraumaticstressandpain, butarelesslikelytobetreatedappropriately;?aphenomenonperhapsleadingtogreaterriskfordisabilityand substanceabuse.Weproposetoexamine3modelsrelatedtothedevelopmentofPTSD/chronicpainpairing anddevelopmentofsubstanceabuseinpeopleinitiallypresentingwithacutepain(notcausedbyatraumatic event)ina6-monthprospectivedesign.FirstistheMain Effects Model inwhichthelevelofPTSDsymptoms atbaselinewillpredictthelikelihoodofatransitionfromacutetochronicpainanddevelopmentofsubstance abuseat6months.SecondistheModeration Model inwhichbaselinevulnerabilityandresiliencefactors interactwithPTSDsymptomstopredictthelikelihoodofdevelopingchronicpainandsubstanceabuse6 monthslater.ThirdistheMediator Model inwhichrelationshipsbetweenbaselinelevelsofPTSDsymptoms andthedevelopmentofchronicpainandsubstanceabuse6monthslateraremediatedbyvulnerabilityand resiliencefactorsat3months.Inner-citywomen(N=600)presentingtoanEmergencyDepartmentwitha complaintofacutebodilypain,ages18-40yrs,willberecruited.Onlywomenpresentingwithacute pelvic/abdominal,neck/shoulderorlowbackpain,andwhodonothaveachronicpainhistorywillbeenrolled. Wewillassesstraumaexposure,PTSDsymptoms,painsensitivity,substancedependenceandabuse,acute painandpsychosocialresilienceandvulnerabilityfactorsacross3waves(baseline,3-and6-months),and obtainadditionalphoneassessmentofpainintensityandinterferenceat1-,2-,4-,and5-months.Inner-city womenwerechosenbecauseoftheirhighlikelihoodofexposuretoongoingtraumaticeventsandthe opportunitytoilluminateahealthdisparityinvolvingthePTSD/chronicpainpairingamonginner-cityminority womeninparticular.Thepublichealthproblemposedbyco-morbidPTSD,chronicpainandsubstanceabuse cannotbeoverstated,particularlyasitimpactshealthdisparitiesintheUS.Greaterunderstandingofhow PTSDmayincreasethelikelihoodoftransitioningfromacutetochronicpainanddevelopingsubstanceabuse, whichfactorscontributetothesedevelopments,andwhichpeoplemaybemostvulnerablewillallowmore timelyclinicalinterventionsonaccuratelyidentifiedtargetstohelpforestallthedevelopmentoftheselargely intractableconditions.

Public Health Relevance

PTSDandchronicpainfrequentlyco-occurwith20-70%ofpeoplewithchronicpainconditions reportingtraumaexposureandPTSDsymptoms.Thepublichealthproblemposedbyco-occurringPTSD, chronicpainandconcomitantsubstanceabusecannotbeoverstated,particularlyasitimpactshealth disparitiesintheUS.ResultsfromthisprospectivestudyofhowPTSDinfluencesthetransitionfromacuteto chronicpainanddevelopmentofsubstanceabusewillshedlightonthiswell-documentedbutpoorly understoodco-morbidity.GreaterunderstandingofhowPTSDmayincreasethelikelihoodofdeveloping chronicpainandsubstanceabuse,whichfactorscontributetothesedevelopments,andwhichpeoplemaybe mostvulnerablewillallowmoretimelyclinicalinterventionsonaccuratelyidentifiedtargetstohelpforestallthe developmentoftheselargelyintractableconditions.

Agency
National Institute of Health (NIH)
Institute
National Institute on Drug Abuse (NIDA)
Type
Research Project (R01)
Project #
3R01DA039522-04S2
Application #
9687205
Study Section
Behavioral Medicine, Interventions and Outcomes Study Section (BMIO)
Program Officer
Aklin, Will
Project Start
2015-08-01
Project End
2020-05-31
Budget Start
2018-06-01
Budget End
2019-05-31
Support Year
4
Fiscal Year
2018
Total Cost
Indirect Cost
Name
Rush University Medical Center
Department
Other Clinical Sciences
Type
Schools of Medicine
DUNS #
068610245
City
Chicago
State
IL
Country
United States
Zip Code
60612
Lillis, Teresa A; Burns, John; Aranda, Frances et al. (2018) PTSD Symptoms and Acute Pain in the Emergency Department: The Roles of Vulnerability and Resilience Factors Among Low-income, Inner-city Women. Clin J Pain 34:1000-1007
Hobfoll, Stevan E; Gaffey, Allison E; Wagner, Linzy M (2018) PTSD and the influence of context: The self as a social mirror. J Pers :