Complex Regional Pain Syndrome (CRPS) is a polymorphic joint and periarticular pain syndrome associated with various changes in sensitivity, vasomotor, sudomotor, muscular and trophic changes. The diagnostic criteria of the disease follow the Budapest criteria, namely (i) vasomotor disorders (temperature asymmetry, color changes), (ii) sudomotor/oedema (sweating changes, edema), (iii) sensory (hyperesthesia, allodynia, hyperalgesia) and (iv) motor/trophic (reduced joint mobility, weakness, tremor, dystonia, trophic disorders of skin, nails, hair). Of the many treatments, augmented reality mirror therapy (ARMT), is novel in substituting a virtual environment for part of the real environment. This type of device has never been studied from a clinical point of view in the treatment of upper limb CRPS, whereas fMRI and clinical dissertation studies have suggested an improvement in neuroplasticity. The aim of this study is to establish the clinical effects of ARMT on CRPS, and to evaluate its benefit within a conventional rehabilitation treatment (physiotherapy and occupational therapy).