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Psychological Characteristics and Pain Frequency Are Associated With Experimental Pain Sensitivity in Pediatric Patients With Sickle Cell Disease.
Journal of Pain 2017 October
Sickle cell disease (SCD) is associated with episodes of severe vaso-occlusive pain beginning in infancy with a subset of patients with SCD transitioning to chronic pain. Response to experimental pain using quantitative sensory testing in these patients suggests altered pain processing. The objectives of this study were to characterize sensitivity to multiple modalities of experimental pain stimuli and to interrogate the relationship of psychological covariates, clinical pain burden, and pain-related outcomes to experimental pain sensitivity in children with SCD compared with healthy individuals of similar age and sex. Cross-sectional assessments of psychological characteristics were performed, and quantitative sensory testing methods were used to measure experimental pain sensitivity in children age 8 to 21 years. Anxiety, depressive symptoms, catastrophizing, and somatization were found to be associated with increased sensitivity to experimental pain stimuli. Increased frequency of painful episodes in SCD was associated with decreased sensitivity to heat pain and decreased mechanical temporal summation. These data suggest that careful consideration be given to psychological factors, age, sex, and clinical burden of pain when studying response to experimental pain in SCD.
PERSPECTIVE: In this study of patients with SCD, a condition associated with recurrent acute or chronic pain, psychological factors such as depression, anxiety, and catastrophizing are associated with increased sensitivity to experimental pain stimuli. Further study is need to delineate the role of these factors in chronic SCD pain.
PERSPECTIVE: In this study of patients with SCD, a condition associated with recurrent acute or chronic pain, psychological factors such as depression, anxiety, and catastrophizing are associated with increased sensitivity to experimental pain stimuli. Further study is need to delineate the role of these factors in chronic SCD pain.
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