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Tests and diagnosis
By Mayo Clinic staffDiagnosis of complex regional pain syndrome is based on a physical exam and your medical history. There is no single test that can definitively diagnose complex regional pain syndrome, but the following procedures may provide important clues:
- Bone scan. A radioactive substance injected into one of your veins permits viewing of your bones with a special camera. This procedure may show increased circulation to the joints in the affected area.
- Sympathetic nervous system tests. These tests look for disturbances in your sympathetic nervous system. For example, thermography measures the skin temperature and blood flow of your affected and unaffected limbs. Other tests can measure the amount of sweat on both limbs. Dissimilar results can indicate complex regional pain syndrome.
- X-rays. Loss of minerals from your bones may show up on an X-ray in later stages of the disease.
- Magnetic resonance imaging (MRI). Images captured by an MRI device may show a number of tissue changes.
References
- Sheon RP, et al. Etiology, clinical manifestations, and diagnosis of complex regional pain syndrome in adults. http://www.uptodate.com/home/index.html. Accessed Jan. 9, 2009.
- Sheon RP, et al. Prevention and management of complex regional pain syndrome in adults. http://www.uptodate.com/home/index.html. Accessed Jan. 9, 2009.
- Complex regional pain syndrome fact sheet. National Institute of Neurological Disorders and Stroke. Accessed Jan. 8, 2009.
- Neuropathic pain. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec16/ch209/ch209c.html#sec16-ch209-ch209c-285. Accessed Feb. 5, 2009.
- Sandroni P (expert opinion). Mayo Clinic, Rochester, Minn. Jan. 30, 2009.
