Fibromyalgia is a complex pain syndrome with high personal and societal costs, with only few effective tools for treatment. Virtual reality (VR) may be an efficient pain management tool although the effectiveness in fibromyalgia patients is unclear.
Objective:
This randomized crossover study set out to 1) investigate the effect of VR on cold pain threshold, -tolerance, and -intensity in fibromyalgia patients and in pain-free individuals and 2) explore the potential relationships between the effect of VR and pain catastrophizing.
Materials and Methods:
Twenty-two female fibromyalgia patients and 22 sex- and age-matched pain-free individuals participated in two conditions (one with VR and one without VR) with foot immersion in 1°C–2°C cold water. The order of conditions was randomized and counterbalanced for each group. Conditions were separated by 20 minutes. Cold pain threshold, -tolerance, and -intensity were assessed during the conditions. Pain catastrophizing was assessed using the Pain Catastrophizing Scale.
Results:
VR induced moderate to large increases in cold pain threshold and pain tolerance compared with the control condition for both the fibromyalgia group and pain-free individuals (P < 0.03). Pain intensity was reduced after VR only in pain-free individuals (P < 0.003). Pain catastrophizing was not related to VR effect on pain threshold, -tolerance, or -intensity for any group.
Conclusion:
VR had a significant effect on pain threshold and tolerance in fibromyalgia patients and pain-free individuals, which supports its ability to distract from pain. Future studies exploring the VR's potential as part of clinical pain management alone or in combination with other treatments are warranted.
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