Cotard Syndrome -- keywords

The following is an initial stab at this search. Another synonym for the condition is "Walking corpse syndrome." Unfortunatley, "walking corpse" isn't handled as a phrase by PubMed and (walking AND corpse) produces a group of irrelevant results.

cotard*[tiab] OR "delire des negations" OR "delire de negation" OR "delusion of negation" OR "delusions of negation" OR "nihilistic delusion" OR "nihilistic delusions" OR "delusions of nihilism"

adjunct condition/s:
"odysseus syndrome"[tiab] OR "nihilism by proxy"