PREVIOUS QUESTION:

 

NEXT QUESTION:

 

What causes complex regional pain syndrome (CRPS)?

ANSWER

Complex regional pain syndrome (CRPS) most likely doesn't have a single cause. Some theories suggest pain receptors in the affected part of the body become responsive to things called catecholamines, a group of nervous system messengers.

In cases of injury-related CRPS, it may happen because of an immune response. This may lead to inflammatory symptoms of redness, warmth, and swelling in the affected area.

SOURCES: 

National Institute of Neurological Disorders and Stroke: ''Complex Regional Pain Syndrome Fact Sheet.'' 

UpToDate.

Reviewed by Carol DerSarkissian on April 27, 2019

SOURCES: 

National Institute of Neurological Disorders and Stroke: ''Complex Regional Pain Syndrome Fact Sheet.'' 

UpToDate.

Reviewed by Carol DerSarkissian on April 27, 2019

NEXT QUESTION:

What are the symptoms of complex regional pain syndrome (CRPS)?

WAS THIS ANSWER HELPFUL

"ALEXA, ASK WEBMD"

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.