hypochondria
noun /ˌhaɪpəˈkɒndriə/
/ˌhaɪpəˈkɑːndriə/
[uncountable]- a state in which somebody worries all the time about their health and believes that they are ill when there is nothing wrong with them
疑病（症） 词源late Middle English: via late Latin from Greek hupokhondria, denoting the soft body area below the ribs, from hupo ‘under’ + khondros ‘sternal cartilage’. Melancholy was originally thought to arise from the liver, gall bladder, spleen, etc.