valetudinarianism

noun

val·​e·​tu·​di·​nar·​i·​an·​ism ˌva-lə-ˌtü-də-ˈner-ē-ə-ˌni-zəm 

: the condition or state of mind of a valetudinarian

Word History

Etymology

valetudinarian entry 1 + -ism

First Known Use

1839, in the meaning defined above