[Fatigue syndromes--an overview of terminology, definitions and classificatory concepts].
Dörr, Johanna, Nater, Urs·Psychotherapie, Psychosomatik, medizinische Psychologie·2013
This article reviews how doctors classify and differentiate between different fatigue conditions, including ME/CFS, burnout, and an older condition called neurasthenia. The authors found that while these conditions share some symptoms, they have important differences—but there currently isn't enough research to clearly separate them. Depression often occurs alongside ME/CFS and burnout, making diagnosis more complicated.