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KMID : 1040020100010010008
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International Journal of Pain
2010 Volume.1 No. 1 p.8 ~ p.14
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The Impairment of Vocabulary Ability in Complex Regional Pain Syndrome Patients
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Kang Do-Hyung
Jung Ye-Ha
Park Soo-Young
Shin Na-Young
Byun Min-Soo
Kim Yong-Chul
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Abstract
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Background: Complex Regional Pain Syndrome (CRPS) type 1 is characterized by severe pain without demonstrable nerve lesions, which can affect emotional distress or cognitive ability. The aim of the present study was to fi nd differences in cognitive function between CRPS patients and controls.
Methods: CRPS group (n = 16) and control group (n = 16) participated in neurocognitive tests, which included four subtests of the Korean version of the Wechsler Adult Intelligent Scale-Revised (K-WAIS) and the Trail Making Test (TMT).
Results: CRPS patients showed lower Vocabulary subtest scores compared to control group (P = 0.011). CRPS patients scored lower in the Arithmetic subtest, but the difference was not signifi cant (P = 0.099). There were no signifi cant differences between the two groups in performance on the TMT-A and B. In the CRPS group, a signifi cant correlation between pain severity and Block Design subtest scores was found (r = -0.504, P = 0.047).
Conclusions: CRPS may contribute to a decline in Vocabulary intelligence, and the extent of pain severity may be associated with a cognitive defi cit in Block Design intelligence, implying regional dysfunctions of the brain.
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KEYWORD
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chronic pain, cognitive function, CRPS, intelligence quotient, trail making test
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