According to the American Medical Association, the World Health Organization has officially added burnout to its International Disease Classification, or the ICD-11, their official list of diseases. Burnout is listed as a syndrome, which results from "chronic workplace stress that has not been successfully managed," the AMA reports. It includes feelings of energy depletion or exhaustion, increased mental distance or feelings of negativism or cynicism related to one's job, and reduced professional efficacy. Take a look at the AMA's article on what this means for doctors and people who's professions often lead to professional burnout.