It may be there’s a quiet battle between the internal painkillers and the pain pathways, said study author Brad Taylor, a pain pharmacologist at the University of Kentucky. As the body becomes dependent on its internal analgesics, the pain pathways become more sensitive. Exploring these pathways may explain why some people develop chronic pain.
“We thought the injury was producing activation of the pain pathways for much longer than previously thought,” Taylor said in a telephone interview. Instead, the body’s own painkillers were camouflaging the increased pain sensitivity.
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