Réflexions sur des essais thérapeutiques dans des syndromes douloureux régionaux complexes.

The diagnosis of chronic regional pain associated with signs of dysautonomy is based exclusively on clinical criteria. The causal role of the sympathetic system being not established, the usual term "reflex sympathetic dystrophic syndrome" has been replaced by "complex regional pain syndrome". At present, no therapeutic option is validated as being specifically efficient. A controlled randomized trial is mandatory to establish efficacy and safety of a potential treatment