Measuring Pain Level Is Difficult Scientists have long known that pain’s intensity is difficult to measure because people ex

Measuring Pain Level Is Difficult
    Scientists have long known that pain’s intensity is difficult to measure because people experience pain differently. The pain one person rates as seven, for example, / might be four to someone who is more tolerant of pain. / These differences make it difficult to show / how well new medicines to ease pain really work. / The question is especially important / because of the increasing misuse of painkilling drugs in some countries.