In this article we will focus on a much disputed eponym: "Diogenes syndrome" (DS). We reviewed selected key issues about the authors who introduced this entity into psychiatric practice, but also about its definition, risk factors, clinical manifestation, management aspects, as well as the similarities between Diogenes' life and philosophy and clinical manifestation of DS. also, we will try to find if this syndrome should be maintain or not in the geriatric and psychiatric practices. We conclude that the name of the syndrome correlates well with Diogenes' life and philosophy as the name of the syndrome is a reference to the self-isolation and rejection of the outside world practiced by the cynical philosopher. although DS is not included in DSM 5 or ICD-11 as a stand-alone entity, we consider that the use of an eponym related to the ancient and well known philosopher can be very useful in teaching medical terminology, but also it could contribute to medicine students' cultural background. [ABSTRACT FROM AUTHOR]