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Autoimmunity in complex-regional pain syndrome.

F Blaes¹, M Tschernatsch, M E Braeu

¹Department of Neurology, Justus-Liebig-University, Giessen, Germany. franz.blaes@neuro.med.uni-giessen.de

Annals of the New York Academy of Sciences

|September 7, 2007

Summary

Complex regional pain syndrome (CRPS) may stem from an autoimmune cause, with autoantibodies targeting peripheral autonomic neurons. This finding offers a new perspective on CRPS pathophysiology and treatment.

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Area of Science:

Neurology
Immunology
Pain Medicine

Background:

Complex regional pain syndrome (CRPS) is characterized by pain, autonomic dysfunction, and functional impairment post-trauma.
The exact cause of CRPS remains unclear, prompting investigation into various etiological factors.

Purpose of the Study:

To investigate the potential autoimmune basis of Complex regional pain syndrome (CRPS).
To identify if autoantibodies in CRPS patients target specific neuronal structures.

Main Methods:

Analysis of autoantibodies in patient sera from CRPS cases.
Utilizing competitive binding assays to determine antibody binding sites on neuronal epitopes.

Main Results:

CRPS patient sera contain autoantibodies that bind to the surface of peripheral autonomic neurons.
Evidence suggests these autoantibodies may target a common neuronal epitope.

Conclusions:

An autoimmune etiology is proposed for Complex regional pain syndrome (CRPS).
This autoimmune concept may significantly influence future treatment strategies for CRPS.