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Chronic pain may impair memory

health-and-fitness Updated: May 19, 2007 12:46 IST

IANS
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Chronic pain doesn't just cause physical discomfort, it can also impair your memory and concentration.

Researchers at the University of Alberta's Multidisciplinary Pain Centre in Edmonton studied 24 patients with chronic pain and found that two-thirds of them showed significant disruption of attention and memory when tested.

The findings of the study published in the latest issue of journal Anesthesia and Analgesia, suggest that pain may disrupt the maintenance of the memory trace that is required to hold information for processing and retain it for storage in longer-term memory stores.

In other words, chronic pain can, quite literally, drive people to distraction.

Participants in the study - all of whom had pain lasting six months or longer-were given computerized tests of working memory and a neuropsychological test of attention on "pain" and "less pain" days.

On the "less pain" day, participants were tested after receiving a pain-reducing procedure as part of their ongoing treatment at the Centre. On the "pain" day, participants were tested without having received a pain-reducing procedure, when their pain was reported to be at a high level.

Sixteen participants - a startling 67 per cent - showed clinical impairment due to pain. The remaining eight participants showed no clinical impairment, said Newswise wire.