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The Search for Pain Biomarkers

For many medical conditions, clinicians can collect quantitative indicators of disease, such as heart rate, body temperature, or levels of a specific protein in a blood sample. For chronic pain, however, such biological markers have not yet been identified. This information gap occurs even though chronic pain is one of the most common reasons why adults seek medical care [1]. If they could be identified, biological markers (or “biomarkers”) for chronic pain could improve patient care by giving doctors a more complete picture of a particular patient’s condition.