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Query: UMLS:C0018681 (headache)
 56,091 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Complex regional pain syndrome type I (CRPS-I) can affect an extremity after minor trauma or operation. The pathogenesis of this syndrome is unclear. It has clinical signs of severe local inflammation as a result of an exaggerated inflammatory response, but neurogenic dysregulation is also a contributor. Several studies investigated the role of inflammatory mediators and cytokines thus far; however, the results are heterogeneous and vary between different settings. This review summarizes recent study results that show a clear underlying inflammatory response at the local site, where systemic responses seem to be inconsistent. An induction of CRPS-like symptoms by application of neuroinflammatory mediators was shown recently. Local inflammation is involved in the pathophysiology of CRPS-I. We must expand our knowledge of pathophysiologic mechanisms, and we are still far away from using inflammatory markers in diagnosis and follow-up of CRPS-I.
Curr Pain Headache Rep 2008 Jun
PMID:Status of immune mediators in complex regional pain syndrome type I. 1879 67

Complex regional pain syndrome (CRPS) is clinically characterized by pain, abnormal regulation of blood flow and sweating, edema of skin and subcutaneous tissues, active and passive movement disorders, and trophic changes. It is classified as type I (reflex sympathetic dystrophy) and type II (causalgia). CRPS cannot be reduced to one system or to one mechanism only. In the past decades, there has been absolutely no doubt that complex regional pain syndromes have to be classified as neuropathic pain disorders. This situation changed when a proposal to redefine neuropathic pain states was recently published, which resulted in an exclusion of CRPS from neuropathic pain disorders. We analyzed the strength of the scientific evidence that supports the neuropathic nature of complex regional pain syndromes.
Curr Pain Headache Rep 2010 Jun
PMID:Complex regional pain syndrome type I: neuropathic or not? 2046 75


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