According to the World Health Organization 'burnout' is now considered a legitimate medical condition. ABC has the scoop:
The World Health Organization now recognizes "burnout" in its guide as a legitimate medical diagnosis.
The International Classification of Diseases Handbook places it in the section "employment" or "unemployment related problems."
According to ICD-11, doctors can diagnose someone with burnout if they have three symptoms: the patient must be exhausted, experiencing mental distance or cynicism about their work and have problems getting the job done successfully.
Doctors can only diagnose burnout when it comes to work. WHO says it does not apply to other life situations.
I completely burned myself out a few years ago and I'm still recovering. I'm glad it's being recognized now.