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Post-Op Pain May Be Due to Immune Reaction: Study

Post-Op Pain May Be Due to Immune Reaction: Study

09/24/10

FRIDAY, Sept. 24 (HealthDay News) -- Nerve inflammation may be the cause of pain, numbness and weakness that some patients experience after surgery, according to a new study.

These problems, called postsurgical neuropathies, are typically believed to be the result of compression or stretching of nerves during surgery. But this new study suggests that, in some patients, neuropathy is the result of the immune system attacking the nerves, leading to inflammation. Immune-suppressing drugs may prove effective in such cases, said the Mayo Clinic researchers.

"It is important that a person with postsurgical inflammatory neuropathy receive a diagnosis and treatment quickly. Understanding the role of inflammation in these patients' neuropathy can lead to appropriate immunotherapy and improvement of neurological symptoms and impairments," study senior author and neurologist Dr. P. James Dyck said in a Mayo news release.

He and his colleagues studied 23 patients who developed neuropathy within 30 days of undergoing orthopedic, abdominal, chest or dental surgery. These patients were selected because their neuropathy didn't appear to be caused by compression or stretching of the nerves.

Nerve biopsies revealed increased inflammation in 21 of the patients. Seventeen of them received three months of immunotherapy, after which all showed improvements in their neuropathy symptoms.

The study was published online Sept. 20 in the journal Brain.

"It is logical for patients to believe that it was the surgeon's fault that they developed a neuropathy because it occurred after the surgery. However, in these cases, we have strong evidence that the neuropathies were not the surgeon's fault but were caused by the immune system attacking the nerves," Dyck said.

More information

The U.S. National Institute of Neurological Disorders and Stroke has more about neuropathy.

Copyright © 2010 HealthDay. All rights reserved.

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.

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