Figure 2. Changes of sensory pain thresholds (QST) during experimentally induced stress in healthy subjects (HC) and patients with fibromyalgia syndrome (FMS).

CDT  =  cold detection threshold, WDT  =  warm detection threshold, CPT  =  cold pain threshold, HPT  =  heat pain threshold, MPT  =  mechanical pain threshold, WUR  =  wind-up ratio, PPT  =  pressure pain threshold, HC  =  healthy controls, FMS  =  fibromyalgia patients.