This article is an attempt at a psychoanalytic understanding of Diogenes syndrome, or hoarding disorder syndrome, by way of a clinical case. This syndrome is characterized by a failure to attend to proper housing habits, including the hoarding of rubbish that may, in fact, create unsuitable, even dangerous, living conditions. The clinical case used suggests that Diogenes syndrome or hoarding disorder reflects or indicates an extreme form of obsessive neurosis involving libidinal regressions to anal fixations designed, paradoxically, to satisfy both a passion for dirty and for order. However, this pathological hoarding may also function to protect the subject against fears associated with meeting people, thereby avoiding any possible intimacy and promoting self-exclusion in an anti-object aim. Finally, the case under discussion helps us to understand the particular psychological aspects or relevance that the actual items and rubbish accumulated have in this syndrome.