This includes demographic variables, and a comorbidity check list of diseases related to the major organ systems, pain intensity measured by numerical scales for pain intensity and by Visual Analogue Scale (VAS), consumption of analgesics and the questionnaires: CRPS Severity Score, if upper limb affected; Quick DASH (a short form of Disabilities of the Arm, Shoulder and Hand Outcome Measure), if lower limb affected; Lower extremity functional scale, Impact of Event Scale-6 if subjected to adverse life events, Insomnia Severity Index, The Hopkins Symptoms Checklist (HSCL- 25), Pain Catastrophizing Scale, Perceived self efficacy and the Bath CRPS Body Perception Disturbance Scale