Pain may be unpleasant, but in most cases it plays a vital, even lifesaving, role. Short bursts of pain act as warning signals that protect us from harm. When you touch a hot pan, stub your toe, or bump your head, your nervous system instantly delivers an “Ow!” that prompts you to pull back before more damage occurs. The pain fades, the body heals, and you remember what not to do next time.
Chronic pain, however, is an entirely different story. In this condition, the warning signal…
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News Source: www.sciencedaily.com
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