''IS the pain stabbing or burning? On a scale from 1 to 10, is it 6 or an 8? Over and over, 17-year-old Sarah Taylor struggled to make doctor's understand her sometimes debilitating levels of pain, first from joint-damaging childhood arthritis, and then from fibromyalgia.
''It's really hard when people can't see how much pain you're in, because they have to take your word on it and sometimes, they don't quite believe you,'' she said.
Now scientists are peeking into Sarah's eyes to track how her pupils react when she's hurting and when she's not - part of quest to develop the first objective way to measure pain.
''If we can't measure pain, we can't fix it,'' said Dr. Julia Finkel. a pediatric anesthesiologist at Children's National Medical Center in Washington, who invented the experimental eye-tracking device.
At just about every doctor's visit you'll get your temperature, heart rate and blood pressure measured. But there's no stethoscope for pain. Patients must convey how bad it is using that 10-point scale or emoji-style charts that show faces turning from smiles to frowns.
That's problematic for lots of reasons. Doctors and nurses have to guess at babies pain by their cries and squirms, for example. The aching that one person takes a 7 might be a 4 to someone who's more used to serious pain or genetically more tolerant.
Patient-to-patient variability makes it hard to test if potential new painkillers really work.
Nor do self-ratings determine what kind of pain someone has - one reason for trial-and-error treatment. Are opioids necessary? Or is that pain, like Sarah's, better suited to nerve targeting medicines?
''It's very frustrating to be in pain and you have to wait like six weeks, two months, to see if the drug's working,'' said Sarah, who uses a combination of medications, acupuncture and lots of exercise to counter her pain.
The honor and serving of the latest operational research on ''pain-o- meter'' continues.
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