Unrecognized attention-deficit/hyperactivity disorder in adults presenting with other psychiatric disorders
Abstract
Many adults with a diagnosed psychiatric disorder also have attention-deficit/hyperactivity disorder (ADHD). In many cases, comorbid ADHD is unrecognized and/or undertreated. Differential diagnosis of adult ADHD can be challenging because ADHD symptoms may overlap with other psychiatric disorders and patients may lack insight into their ADHD-related symptoms. Current ADHD diagnostic criteria in the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition-Text Revision may prevent appropriate diagnosis of many patients with significant ADHD symptoms. Adults may not be able to provide a history of onset of symptoms during childhood, and it may be difficult to confirm that ADHD symptoms are not better accounted for by other comorbid psychiatric conditions. Comorbid ADHD is most prevalent among patients with mood, anxiety, substance use, and impulse-control disorders. ADHD can negatively affect outcomes of other comorbid psychiatric disorders, and ADHD symptoms may compromise compliance with treatment regimens. Furthermore, unrecognized ADHD symptoms may be mistaken for poor treatment response in these comorbid disorders. In these individuals, ADHD pharmacotherapy seems to be as effective in reducing core ADHD symptoms, as it is in patients who have no comorbidity. Limited evidence further suggests that ADHD therapy may help to improve symptoms of certain psychiatric comorbidities, such as depression. Therefore, management of ADHD may help to stabilize daily functioning and facilitate a fuller recovery.
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Psychiatric and behavioral comorbidities often co-occur with ADHD and result in increased difficulties for appropriate diagnoses and treatments.
“Psychiatric and behavioral comorbidities, such as depression, anxiety disorder, bipolar disorder, substance use, and personality disorders, often co-occur with ADHD and result in increased difficulties for appropriate diagnoses and treatments (Barkley and Brown, 2008; Rosler et al., 2010; Mao and Findling, 2014; Katzman et al., 2017).”
From A Review of Heterogeneity in Attention Deficit/Hyperactivity Disorder (ADHD) (2019) · cites this paper as Barkley and Brown, 2008
ADHD impacts interpersonal functioning, particularly within intimate relationships.
“There is a significant recognition of ADHD's impact on interpersonal functioning, particularly within intimate relationships (Barkley and Brown 2008; Ginapp et al. 2023; Huynh‐Hohnbaum and Benowitz 2022; Ramsay 2010).”
From “I Felt Like a Burden”: An Exploration Into the Experience of Romantic Relationships for People With ADHD (2026) · cites this paper as Barkley and Brown 2008
Cites
Diagnostic and Statistical Manual of Mental Disorders
Williams, J. B. W., & First, M. B. (2013) · Oxford University Press eBooks · doi:10.1093/acrefore/9780199975839.013.104 · Cited by 109,841 · see citing works
Kessler, R. C., Berglund, P., Demler, O., Jin, R., Merikangas, K. R., & Walters, E. E. (2005) · Archives of General Psychiatry · doi:10.1001/archpsyc.62.6.593 · Cited by 20,391 · see citing works
The worldwide prevalence of ADHD: a systematic review and metaregression analysis
Polanczyk, G., de Lima, M. S., Horta, B. L., Biederman, J., & Rohde, L. A. (2007) · American Journal of Psychiatry · doi:10.1176/ajp.2007.164.6.942 · Cited by 5,346 · see citing works
Kessler, R. C., Adler, L., Barkley, R., Biederman, J., Conners, C. K., Demler, O., Faraone, S. V., Greenhill, L. L., Howes, M. J., Secnik, K., et al. (2006) · American Journal of Psychiatry · doi:10.1176/ajp.2006.163.4.716 · Cited by 3,886 · see citing works
Self-citationFARAONE, S. V., BIEDERMAN, J., & MICK, E. (2006) · Psychological Medicine · doi:10.1017/s003329170500471x · Cited by 2,267 · see citing works
(1998) · Cited by 2,026 · see citing works
Biederman, J. (2000) · American Journal of Psychiatry · doi:10.1176/appi.ajp.157.5.816 · Cited by 1,498 · see citing works
Attention-deficit hyperactivity disorder
Biederman, J., & Faraone, S. V. (2005) · The Lancet · doi:10.1016/s0140-6736(05)66915-2 · Cited by 1,463 · see citing works
General hospital psychiatry: the Italian experience.
Faraone, S. V., Sergeant, J. A., Gillberg, C., & Biederman, J. (2003) · Europe PMC (PubMed Central) · Cited by 1,277 · see citing works
Barkley, R. A., Fischer, M., Smallish, L., & Fletcher, K. (2002) · Journal of Abnormal Psychology · doi:10.1037/0021-843x.111.2.279 · Cited by 1,199 · see citing works
Self-citationCharacterizing cognition in ADHD: beyond executive dysfunction
Castellanos, F. X., Sonuga-Barke, E. J. S., Milham, M. P., & Tannock, R. (2006) · Trends in Cognitive Sciences · doi:10.1016/j.tics.2006.01.011 · Cited by 1,170 · see citing works
Young Adult Outcome of Hyperactive Children: Adaptive Functioning in Major Life Activities
Barkley, R. A., Fischer, M., Smallish, L., & Fletcher, K. (2006) · Journal of the American Academy of Child & Adolescent Psychiatry · doi:10.1097/01.chi.0000189134.97436.e2 · Cited by 1,027 · see citing works
Self-citationNeuropsychology of Adults With Attention-Deficit/Hyperactivity Disorder: A Meta-Analytic Review.
Hervey, A. S., Epstein, J. N., & Curry, J. F. (2004) · Neuropsychology · doi:10.1037/0894-4105.18.3.485 · Cited by 781 · see citing works
Attention deficit hyperactivity disorder adults: Comorbidities and adaptive impairments
Murphy, K., & Barkley, R. A. (1996) · Comprehensive Psychiatry · doi:10.1016/s0010-440x(96)90022-x · Cited by 700 · see citing works
Self-citationThe Worldwide prevalence of ADHD: is it an American condition?
Faraone, S. V., Sergeant, J. A., Gillberg, C., & Biederman, J. (2003) · Digital Academic REpository of VU University Amsterdam (Vrije Universiteit Amsterdam) · Cited by 688 · see citing works
Hart, E. L., Lahey, B. B., Loeber, R., Applegate, B., & Frick, P. J. (1995) · Journal of Abnormal Child Psychology · doi:10.1007/bf01447474 · Cited by 590 · see citing works
Hyperactive Boys Almost Grown Up: V. Replication of Psychiatric Status
Mannuzza, S. (1991) · Archives of General Psychiatry · doi:10.1001/archpsyc.1991.01810250079012 · Cited by 549 · see citing works
Methodology Of Frontal And Executive Function
(2004) · Routledge eBooks · doi:10.4324/9780203344187 · Cited by 547 · see citing works
Theory and methodology in executive function research
Burgess, P. (1997) · Routledge eBooks · doi:10.4324/9780203344187-8 · Cited by 533 · see citing works
Methodology of frontal and executive function
Rieger, M. (1999) · Zeitschrift für Neuropsychologie · doi:10.1024//1016-264x.10.2.123 · Cited by 483 · see citing works
Sandra Kooij, J. J., Marije Boonstra, A., Swinkels, S. H. N., Bekker, E. M., de Noord, I., & Buitelaar, J. K. (2008) · Journal of Attention Disorders · doi:10.1177/1087054707299367 · Cited by 388 · see citing works
Attention-Deficit Hyperactivity Disorder and Juvenile Mania: An Overlooked Comorbidity?
Biederman, J., Faraone, S. V., Mick, E. O., Wozniak, J. R., Chen, L., Ouellette, C., Marrs, A. L., Moore, P. S., García, J. M., Mennin, D. S., et al. (1996) · Journal of the American Academy of Child & Adolescent Psychiatry · doi:10.1097/00004583-199608000-00010 · Cited by 388 · see citing works
Barkley, R. A., Murphy, K. R., Dupaul, G. J., & Bush, T. (2002) · Journal of the International Neuropsychological Society · doi:10.1017/s1355617702801345 · Cited by 387 · see citing works
Self-citationSpencer, T., Biederman, J., Wilens, T., Doyle, R., Surman, C., Prince, J., Mick, E., Aleardi, M., Herzig, K., & Faraone, S. (2005) · Biological Psychiatry · doi:10.1016/j.biopsych.2004.11.043 · Cited by 385 · see citing works
Barkley, R., & Biederman, J. (1997) · Journal of the American Academy of Child and Adolescent Psychiatry · doi:10.1097/00004583-199709000-00012 · Cited by 379 · see citing works
Self-citationPelham, W. E., Gnagy, E. M., Burrows-Maclean, L., Williams, A., Fabiano, G. A., Morrisey, S. M., Chronis, A. M., Forehand, G. L., Nguyen, C. A., Hoffman, M. T., et al. (2001) · Pediatrics · doi:10.1542/peds.107.6.e105 · Cited by 378 · see citing works
Klein, R. G. (1997) · Archives of General Psychiatry · doi:10.1001/archpsyc.1997.01830240023003 · Cited by 349 · see citing works
Faraone, S. V., Biederman, J., Spencer, T., Mick, E., Murray, K., Petty, C., Adamson, J. J., & Monuteaux, M. C. (2006) · American Journal of Psychiatry · doi:10.1176/ajp.2006.163.10.1720 · Cited by 329 · see citing works
Prevalence of attention-deficit/hyperactivity disorder and conduct disorder among substance abusers.
Schubiner, H., Tzelepis, A., Milberger, S., Lockhart, N. A., Kruger, M., Kelley, B. J., & Schoener, E. (2000) · Journal of Clinical Psychiatry · doi:10.4088/jcp.v61n0402 · Cited by 328 · see citing works
Attention deficit hyperactivity disorder and comorbid disorders: issues of overlapping symptoms.
Milberger, S., Biederman, J., Faraone, S., Murphy, J. M., & Tsuang, M. (1995) · American Journal of Psychiatry · doi:10.1176/ajp.152.12.1793 · Cited by 304 · see citing works
Nierenberg, A. A., Miyahara, S., Spencer, T., Wisniewski, S. R., Otto, M. W., Simon, N. M., Pollack, M. H., Ostacher, M. J., Yan, L. J., Siegel, R. S., et al. (2005) · Biological Psychiatry · doi:10.1016/j.biopsych.2005.01.036 · Cited by 283 · see citing works
Carroll, K. M., & Rounsaville, B. (1993) · Comprehensive Psychiatry · doi:10.1016/0010-440x(93)90050-e · Cited by 276 · see citing works
A Clinical Perspective of Attention-Deficit/Hyperactivity Disorder Into Adulthood
Wilens, T. E., & Dodson, W. (2004) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.v65n1003 · Cited by 274 · see citing works
Wilens, T. E. (2004) · Psychiatric Clinics of North America · doi:10.1016/s0193-953x(03)00113-8 · Cited by 264 · see citing works
Patterns of Psychiatric Comorbidity with Attention-Deficit/Hyperactivity Disorder
Pliszka, S. R. (2000) · Child and Adolescent Psychiatric Clinics of North America · doi:10.1016/s1056-4993(18)30105-6 · Cited by 257 · see citing works
Attention deficit disorder: the unfocused mind in children and adults
(2006) · Choice Reviews Online · doi:10.5860/choice.43-2832 · Cited by 243 · see citing works
Attention-deficit disorders and comorbidities in children, adolescents, and adults
Brown, T. E. (2000) · Cited by 239 · see citing works
Self-citationBiederman, J., Monuteaux, M. C., Spencer, T., Wilens, T. E., MacPherson, H. A., & Faraone, S. V. (2008) · American Journal of Psychiatry · doi:10.1176/appi.ajp.2007.07091486 · Cited by 239 · cited 1× · see citing works
“However, recent findings demonstrated that stimulant treatment of children and adolescents with ADHD does not increase their risk of SUDs in adulthood and may offer additional benefits.(50)”
The effects of attention-deficit/hyperactivity disorder on employment and household income.
(2006) · PubMed Central · Cited by 238 · see citing works
(1996) · American Journal of Psychiatry · doi:10.1176/ajp.153.9.1147 · Cited by 228 · see citing works
Brown, T. E. (2006) · International Journal of Disability, Development and Education · doi:10.1080/10349120500510024 · Cited by 215 · cited 1× · see citing works
“Not all EF impairments are attributable to ADHD.(26) Such difficulties can also result from substance abuse, disorders on the autistic spectrum, cerebral vascular accidents, dementias, etc.”
BackgroundSelf-citationComorbidity of Attention Deficit Hyperactivity Disorder With Early- and Late-Onset Bipolar Disorder
Sachs, G. S., Baldassano, C. F., Truman, C. J., & Guille, C. (2000) · American Journal of Psychiatry · doi:10.1176/appi.ajp.157.3.466 · Cited by 202 · see citing works
Assessing attention-deficit/hyperactivity disorder in adults: focus on rating scales.
Murphy, K. R., & Adler, L. A. (2004) · PubMed · Cited by 176 · see citing works
Newcorn, J. H., Spencer, T. J., Biederman, J., Milton, D. R., & Michelson, D. (2005) · Journal of the American Academy of Child & Adolescent Psychiatry · doi:10.1097/00004583-200503000-00008 · Cited by 174 · see citing works
A guide to the treatment of adults with ADHD.
Weiss, M. D., & Weiss, J. (2004) · PubMed · Cited by 138 · see citing works
Executive functions and adaptive functioning in young adult attention-deficit/hyperactivity disorder
Stavro, G. M., Ettenhofer, M. L., & Nigg, J. T. (2007) · Journal of the International Neuropsychological Society · doi:10.1017/s1355617707070348 · Cited by 117 · see citing works
Prospective study of adolescent drug use among community samples of ADHD and non-ADHD participants
AUGUST, G. J., WINTERS, K. C., REALMUTO, G. M., FAHNHORST, T., BOTZET, A., & LEE, S. (2006) · Journal of the American Academy of Child & Adolescent Psychiatry · doi:10.1097/01.chi.0000219831.16226.f8 · Cited by 113 · see citing works
Attention deficit hyperactivity disorder in childhood among adults with major depression
Alpert, J. E., Maddocks, A., Nierenberg, A. A., O'Sullivan, R., Pava, J. A., Worthington, J. J., Biederman, J., Rosenbaum, J. F., & Fava, M. (1996) · Psychiatry Research · doi:10.1016/0165-1781(96)02912-5 · Cited by 108 · see citing works
The role of comorbid major depressive disorder in the clinical presentation of adult ADHD
Fischer, A. G., Bau, C. H. D., Grevet, E. H., Salgado, C. A. I., Victor, M. M., Kalil, K. L. S., Sousa, N. O., Garcia, C. R., & Belmonte-de-Abreu, P. S. (2006) · Journal of Psychiatric Research · doi:10.1016/j.jpsychires.2006.09.008 · Cited by 107 · see citing works
Biederman, J., Spencer, T. J., Newcorn, J. H., Gao, H., Milton, D. R., Feldman, P. D., & Witte, M. M. (2006) · Psychopharmacology · doi:10.1007/s00213-006-0565-2 · Cited by 101 · see citing works
Atomoxetine and Adult Attention-Deficit/Hyperactivity Disorder: The Effects of Comorbidity
Spencer, T. J., Faraone, S. V., Michelson, D., Adler, L. A., Reimherr, F. W., Glatt, S. J., & Biederman, J. (2006) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.v67n0312 · Cited by 94 · see citing works
Spencer, T. J., Abikoff, H., Connor, D. F., Biederman, J., Pliszka, S. R., Boellner, S. W., Read, S. C., & Pratt, R. D. (2006) · Clinical Therapeutics · doi:10.1016/j.clinthera.2006.03.006 · Cited by 78 · see citing works
Hazell, P., Zhang, S., Wolańczyk, T., Barton, J., Johnson, M., Zuddas, A., Danckaerts, M., Ladikos, A., Benn, D., Yoran‐Hegesh, R., et al. (2006) · European Child & Adolescent Psychiatry · doi:10.1007/s00787-006-0506-y · Cited by 73 · see citing works
Manassis (2007) · Behavioral and Brain Functions · doi:10.1186/1744-9081-3-4 · Cited by 72 · see citing works
Disorders usually first diagnosed in infancy, childhood, or adolescence.
Popper, C. W., Gammon, G. D., West, S. A., & Bailey, C. E. (1994) · Cited by 69 · see citing works
Gordon, S. M., Tulak, F., & Troncale, J. A. (2004) · Journal of Addictive Diseases · doi:10.1300/j069v23n04_03 · Cited by 67 · see citing works
Heßlinger, B., van Elst, L. T., Mochan, F., & Ebert, D. (2003) · Acta Psychiatrica Scandinavica · doi:10.1034/j.1600-0447.2003.00112.x · Cited by 44 · see citing works
DSM-IV: ADHD AND EXECUTIVE FUNCTION IMPAIRMENTS *
Brown, T. E. (2002) · Cited by 35 · see citing works
Self-citationFishman, P. A., Stang, P., & Hogue, S. (2007) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.v68n0210 · Cited by 25 · see citing works
Saules, K. K., Pomerleau, C. S., & Schubiner, H. H. (2003) · Journal of Addictive Diseases · doi:10.1300/j069v22n02_06 · Cited by 21 · see citing works
Attention-deficit/hyperactivity disorder: medication treatment-dosing and duration of action.
Steinhoff, K. W. (2004) · PubMed · Cited by 19 · see citing works
ADHD in Adult Psychiatric Outpatients
Lomas, B., & Gartside, P. S. (1999) · Psychiatric Services · doi:10.1176/ps.50.5.705 · Cited by 11 · see citing works
Is Attention-Deficit Hyperactivity Disorder (ADHD) Diagnosed in Adults?
Robison, L. M., Skaer, T. L., & Sclar, D. A. (2004) · International Journal of Pharmaceutical Medicine · doi:10.2165/00124363-200418060-00003 · Cited by 9 · see citing works
Managing ADHD in Children, Adolescents, and Adults With Comorbid Anxiety
(2007) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.v68n0316 · Cited by 8 · see citing works
Attention-Deficit Disorders and Comorbidities in Children, Adolescents, and Adults
Goldstein, S. (2000) · Psychiatric Services · doi:10.1176/appi.ps.51.10.1320 · Cited by 1 · see citing works
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Sorted by citations
Adult ADHD and comorbid disorders: clinical implications of a dimensional approach
Katzman, M. A., Bilkey, T. S., Chokka, P. R., Fallu, A., & Klassen, L. J. (2017) · BMC Psychiatry · doi:10.1186/s12888-017-1463-3 · Cited by 732 · see citing works
A quantitative meta-analysis of neurocognitive functioning in posttraumatic stress disorder.
Scott, J. C., Matt, G. E., Wrocklage, K. M., Crnich, C., Jordan, J., Southwick, S. M., Krystal, J. H., & Schweinsburg, B. C. (2015) · Psychological Bulletin · doi:10.1037/a0038039 · Cited by 513 · see citing works
Comorbidity prevalence and treatment outcome in children and adolescents with ADHD
on behalf of Lombardy ADHD Group, Reale, L., Bartoli, B., Cartabia, M., Zanetti, M., Costantino, M. A., Canevini, M. P., Termine, C., & Bonati, M. (2017) · European Child & Adolescent Psychiatry · doi:10.1007/s00787-017-1005-z · Cited by 414 · see citing works
A Review of Heterogeneity in Attention Deficit/Hyperactivity Disorder (ADHD)
Luo, Y., Weibman, D., Halperin, J. M., & Li, X. (2019) · Frontiers in Human Neuroscience · doi:10.3389/fnhum.2019.00042 · Cited by 394 · see citing works
Frick, P. J., & Nigg, J. T. (2012) · Annual Review of Clinical Psychology · doi:10.1146/annurev-clinpsy-032511-143150 · Cited by 290 · see citing works
Ginsberg, Y., Quintero, J., Anand, E., Casillas, M., & Upadhyaya, H. P. (2014) · The Primary Care Companion For CNS Disorders · doi:10.4088/pcc.13r01600 · Cited by 274 · see citing works
Gender differences in adults with attention-deficit/hyperactivity disorder: A narrative review
Williamson, D., & Johnston, C. (2015) · Clinical Psychology Review · doi:10.1016/j.cpr.2015.05.005 · Cited by 226 · see citing works
Bond, D. J., Hadjipavlou, G., Lam, R. W., McIntyre, R. S., Beaulieu, S., Schaffer, A., & Weiss, M. (2012) · Annals of Clinical Psychiatry · doi:10.1177/104012371202400104 · Cited by 133 · see citing works
Psychiatric Comorbidity at the Time of Diagnosis in Adults With ADHD: The CAT Study
Piñeiro-Dieguez, B., Balanzá-Martínez, V., García-García, P., Soler-López, B., & the CAT Study Group (2016) · Journal of Attention Disorders · doi:10.1177/1087054713518240 · Cited by 111 · see citing works
Fuller‐Thomson, E., Lewis, D. A., & Agbeyaka, S. K. (2016) · Child Care Health and Development · doi:10.1111/cch.12380 · Cited by 113 · see citing works
Marshall, P., Hoelzle, J., & Nikolas, M. (2021) · The Clinical Neuropsychologist · doi:10.1080/13854046.2019.1696409 · Cited by 85 · see citing works
“Yet, many adults have difficulty doing so due, in part, to lack of insight into their behavior (Barkley & Brown, 2008).”
BackgroundThe relationship between early adversities and attention-deficit/hyperactivity disorder
Fuller-Thomson, E., & Lewis, D. A. (2015) · Child Abuse & Neglect · doi:10.1016/j.chiabu.2015.03.005 · Cited by 84 · see citing works
Gamble, K. L., May, R. S., Besing, R. C., Tankersly, A. P., & Fargason, R. E. (2013) · Chronobiology International · doi:10.3109/07420528.2012.754454 · Cited by 64 · see citing works
Prevalence and Correlates of Self-Reported ADD/ADHD in a Large National Sample of Canadian Adults
Hesson, J., & Fowler, K. (2018) · Journal of Attention Disorders · doi:10.1177/1087054715573992 · Cited by 56 · see citing works
López-Pinar, C., Martínez-Sanchís, S., Carbonell-Vayá, E., Sánchez-Meca, J., & Fenollar-Cortés, J. (2020) · Journal of Attention Disorders · doi:10.1177/1087054719855685 · Cited by 47 · see citing works
O'Brien, M., Kini‐Seery, C., Kelly, C., Kilbride, K., Wrigley, M., Nearchou, F., & Bramham, J. (2026) · Journal of Marital and Family Therapy · doi:10.1111/jmft.70097 · Cited by 2 · see citing works
- Authors
- Barkley, R. A., & Brown, T. E.
- Affiliations
- Medical University of South Carolina (US)
- Venue
- CNS Spectrums
- Publisher
- Cambridge University Press (CUP)
- Published
- 2008-11
- Volume
- 13
- Issue
- 11
- Pages
- 977-984
- ISSN
- 1092-8529 (ISSN-L)
- 2165-6509
- OpenAlex
- W2412516425
- Cited by
- 163
- References
- 65
- Citations by year
- 2026: 12 · 2025: 7 · 2024: 6 · 2023: 12 · 2022: 6 · 2021: 2 · 2020: 13 · 2019: 7 · 2018: 8 · 2017: 10 · 2016: 11 · 2015: 12 · 2014: 16 · 2013: 11 · 2012: 11
- FWCI
- 0.81
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- CNS Spectrums (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
- Keywords
- adult ADHD, comorbidities, psychiatric comorbidity, underdiagnosis, differential diagnosis, DSM-IV-TR diagnostic criteria, mood disorders, anxiety disorders, substance use disorders, impulse control disorders, medication adherence, ADHD medication, depression
- MeSH terms
- Attention Deficit Disorder with Hyperactivity, Mental Disorders, Diagnosis, Differential, Diagnostic Errors, Humans, Neuropsychological Tests, Severity of Illness Index, Comorbidity, Prevalence, Diagnostic and Statistical Manual of Mental Disorders
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