Impact of adolescent complex regional pain syndrome on the psychopathology of young men ahead of military service: a retrospective cohort analysis of Korean conscription data.
BACKGROUND
The relationship between physical and psychopathological features in complex regional pain syndrome (CRPS) has been a subject of constant interest, but no data are available in adolescents. Therefore, we aimed to identify the factors associated with psychopathology in adolescents with CRPS ahead of military service.


METHODS
We retrospectively reviewed all conscription examinees who had completed a Military Personality Inventory (MPI) during a period between February 2013 and December 2016. A total of 63 persons with a history of CRPS (19-years of age for all) were enrolled. Basic demographic and pain-related data were analyzed to examine their association with MPI results. The mean FGR score as well as the 8 subdomain scores were compared between those with pain duration at < 15 months (n = 30) versus ≥15 months (n = 33). Binary MPI results (normal-abnormal) were also compared between the two groups.


RESULTS
In multivariate analysis, abnormal MPI was associated with pain duration, with an odds ratio (OR) at 1.05 for every 1-month increase (95% confidence interval (CI) 1.02-1.08; P = 0.002). Subjects with pain duration at ≥15 months have lower faking good response score (P < 0.001 vs. those with pain duration at < 15 months), and higher abnormal MPI result rate, faking bad response, inconsistency, anxiety, depression, somatization, paranoid, personality disorder cluster A, and personality disorder cluster B scores (P < 0.05). Pain duration was significantly associated with the MPI variables.


CONCLUSIONS
Pain duration is associated with psychopathology in adolescents with CRPS. Psychopathologic features increased as the disease duration increased. A comprehensive understanding of time-dependent psychopathological factors could support the planning of multimodal approaches for managing adolescent CRPS.
['Lee|Shin-Heon|SH|', 'Ko|Myeong-Jin|MJ|', 'Nam|Taek-Kyun|TK|', 'Kwon|Jeong-Taik|JT|', 'Park|Yong-Sook|YS|0000-0003-1152-6844']
D015331:Cohort Studies D020918:Complex Regional Pain Syndromes D006801:Humans D008297:Male D008889:Military Personnel D016017:Odds Ratio D010555:Personality Inventory D011599:Psychopathology D056910:Republic of Korea D012189:Retrospective Studies D012307:Risk Factors D055815:Young Adult
Adolescent Complex regional pain syndromes Psychopathology Personality inventory Chronic pain Military personnel