Tallulah Willis knew 'something was wrong' before Bruce Willis' dementia diagnosis

Tallulah Willis has opened up about her evolving relationship with her father, Bruce Willis, and his recent dementia diagnosis.

In an essay for Vogue published Wednesday, the 29-year-old actor and self-proclaimed "nepo baby" of Bruce Willis and Demi Moore detailed some of the symptoms that led to the "Die Hard" star getting diagnosed with aphasia and, later, frontotemporal dementia.

Aphasia is a communication disorder and feature of FTD, that can cause unexplained personality changes and apathy, as well as struggles with decision-making, speaking and language comprehension.