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Pain comes to us all at some point in our lives. Sometimes it’s a short, sharp shock. Other times, it seems to cling to us. A person’s pain is a unique experience and describing what hurts is not a simple task. In this edition of the Why Factor on the ��ѿ��ý World Service, Sandra Kanthal asks why we need to understand more about pain and learns more about new ways being developed to manage and measure pain. (Photo: Pain level meter indicating maximum Credit: Shutterstock)