How Pain Works - Presented by: The Aol. On Network

Pain is.. a pain. Too much of it, and it can really make life hard. But imagine none of it. That can be bad too, as you'd never know if you're hurt. That's the reality for a select few who carry a rare genetic mutation. Trace explains how our body's pain system works, and how these people could help those suffering from chronic pain in the future.



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