Margo McCaffery was an American registered nurse and pioneer of the field of

pain management Pain management is an aspect of medicine and health care involving relief of pain (pain relief, analgesia, pain control) in various dimensions, from acute and simple to chronic and challenging. Most physicians and other health professionals pr ...

nursing Nursing is a profession within the health care sector focused on the care of individuals, families, and communities so they may attain, maintain, or recover optimal health and quality of life. Nurses may be differentiated from other health ...

. McCaffery's oft-quoted definition of pain as "whatever the experiencing person says it is, existing whenever and wherever the person says it does", stated as early as 1968, has become the prevailing conceptualization of pain for clinicians over the past few decades. McCaffery died on January 8, 2018.

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American nurses American women nurses 2018 deaths Year of birth missing 21st-century American women {{nurse-bio-stub