Martínez E, et al. - Researchers examined if an association exists between chronic pain and disruption of the body schema in fibromyalgia syndrome (FMS). A sample of patients with FMS and pain-free controls were investigated for distinct perceptual aspects of the body schema. The inferior performance was exhibited patients with FMS on the right/left judgment task, both in terms of correct matches (75.38% vs 89.67%, respectively) and response time (2.58 s vs 1.89 s, respectively). Large and very large effect sizes were evident, respectively. Participants from the FMS sample showed significantly higher two-point discrimination thresholds relative to controls. Referred sensations upon tactile stimulation, including tingling, pins and needles, weight, and cramps, were experienced by nine of 14 participants with FMS, but such observation was not reported in any control participants. Patients with FMS scored across all items in the delivered questionnaire addressing anomalous sensations on the mirror setup (Cohen d = 1.04 to 2.42 across all items), and FMS patients sensed pain during the sensory-motor conflict (SMC)(the required statistical power for it to be statistically significant was 96% and for it to be recognized as a difference of means in pain item). The findings thereby suggest that people with FMS display a disrupted body schema and propensity to experiencing anomalous somatosensory sensations during SMC.