1. 虚无妄想：科塔尔综合征(cotard syndrome) 以虚无妄想(nihilistic delusion)和否定妄想(delusion of negation)为核心症状. 患者主要是认为自身躯体和内部器官发生了变化,...

noun

1. the delusion that things (or everything, including the self) do not exist
a sense that everything is unreal

Synonym: nihilism