circumstantiality

noun
cir·​cum·​stan·​ti·​al·​i·​ty | \ ˌsər-kəm-ˌstan-chē-ˈal-ət-ē How to pronounce circumstantiality (audio) \
plural circumstantialities

Medical Definition of circumstantiality

: a conversational pattern (as in some manic states) exhibiting excessive attention to irrelevant and digressive details