Professional performers are not only demanding but also remarkably self-analytical. Like
athletes, performers have forced health care providers to refine our definition of normalcy.
Ordinarily, physicians, psychotherapists, and other professionals are granted great latitude
in the definition of “normal.” Arts-medicine practitioners have learned to recognize, often
quantify, and sometimes restore very high levels of human performance, approaching
perfection. The process has required advances in scientific knowledge, clinical …