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Updated: Aug 9, 2026

Chronic Post-Ischemia Pain Model for Complex Regional Pain Syndrome Type-I in Rats
Published on: January 21, 2020
Complex regional pain syndrome type I in the upper extremity
Christopher Doro1, Radford J Hayden, Dean S Louis
1Department of Orthopaedic Surgery, University of Michigan Medical Center, 2098 South Main Street, Ann Arbor, MI 48103, USA. cdoro@umich.edu
Complex regional pain syndrome (CRPS) is a difficult condition affecting the upper extremity. Treatment requires a multidisciplinary team focused on restoring function, though its exact causes remain unclear.
Area of Science:
- Pain Medicine
- Neurology
- Rehabilitation Medicine
Background:
- Complex Regional Pain Syndrome (CRPS) has been recognized for centuries, often following trauma.
- CRPS Type 1, particularly affecting the upper extremity, presents with diverse symptoms.
- The exact pathophysiology of CRPS is not fully understood, likely involving multiple factors.
Purpose of the Study:
- To review the clinical presentation and management of Complex Regional Pain Syndrome Type 1 in the upper extremity.
- To highlight the multifactorial nature of CRPS pathophysiology.
- To emphasize the importance of a multidisciplinary approach to treatment.
Main Methods:
- Review of existing literature on Complex Regional Pain Syndrome Type 1.
- Focus on upper extremity involvement and common clinical manifestations.
- Discussion of potential pathophysiological mechanisms and current treatment strategies.
Main Results:
- CRPS Type 1 in the upper extremity is characterized by pain, sensory changes, edema, and temperature/sweating abnormalities.
- Chronic symptoms can lead to significant skin, nail, and bone changes.
- The condition's pathophysiology likely involves inflammation, the nervous system, and external factors.
Conclusions:
- Effective management of CRPS Type 1 necessitates a multidisciplinary team approach.
- Treatment should prioritize functional restoration for patients.
- Further research is crucial for elucidating CRPS pathophysiology and optimizing treatment.
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