Abstract:
BACKGROUND: Cognitive-behavior therapy (CBT) leads to a reduction of fatigue and pain in chronic fatigue syndrome. The processes underlying the reduction in pain have not been investigated. Recently, it was shown that increased self-efficacy, decreased focusing on symptoms, increased physical functioning, and a change in beliefs about activity contribute to the decrease in fatigue.
OBJECTIVES: The present study has 2 objectives: (1) to determine the relationship between the reduction of fatigue and pain during CBT; (2) test to what extent the model for change in fatigue is applicable to the reduction in pain.
MATERIALS AND METHODS: One hundred forty-two patients meeting United States centers for Disease Control and Prevention criteria for chronic fatigue syndrome, currently reporting pain, and starting CBT were included. A cross-lagged analysis was performed to study the causal direction of change between pain and fatigue. Pain and process variables were assessed before therapy, 3 times during CBT, and after therapy. Actual physical activity was also assessed. The model was tested with multiple regression analyses.
RESULTS: The direction of change between pain and fatigue could not be determined. An increase in physical functioning and decrease in focusing on symptoms explained 4% to 14% of the change in pain.
CONCLUSIONS: Pain and fatigue most probably decrease simultaneously during CBT. Pain reduction can partly be explained by a reduction of symptom focusing and increased physical functioning. Additional, yet unknown cognitive-behavioral factors also play a role in the reduction of pain.
Source: Bloot L, Heins MJ, Donders R, Bleijenberg G, Knoop H. The Process of Change in Pain During Cognitive-Behavior Therapy for Chronic Fatigue Syndrome. Clin J Pain. 2015 Oct;31(10):914-21. doi: 10.1097/AJP.0000000000000191. https://www.ncbi.nlm.nih.gov/pubmed/25503595