Bruce Willis, the famous actor known for his roles in movies like "Die Hard," "Pulp Fiction," and "The Sixth Sense," was diagnosed with frontotemporal dementia (FTD) in 2023. His family announced his diagnosis in February 2023, nearly a year after they revealed that he was retiring from acting due to aphasia, a disorder that causes difficulty with communication. FTD is a type of dementia that causes progressive nerve cell loss in the brains frontal or temporal lobes. Willis condition has progressed since his initial diagnosis, and he has had to retire from acting. Aphasia, which Willis experienced before his dementia diagnosis, can cause difficulty with speaking, understanding, reading, or writing.