Bruce WIllis

In a statement on social media, they said it was a "relief to finally have a clear diagnosis".

The 67-year-old was diagnosed with aphasia - which causes difficulties with speech - in spring last year, but this has progressed and he has been given a more specific diagnosis, the family said.

They expressed their "deepest gratitude for the incredible outpouring of love".

The family went on to say frontotemporal dementia is the most common form of dementia in people under 60.

On Wednesday, his family revealed he has the brain disorder aphasia.

Ceremony bosses said it was "not appropriate" to award prizes to those whose medical conditions may have affected their performances.

Willis was given his own category for worst Bruce Willis performance in 2021.

Of the eight films nominated, Cosmic Sin was judged most worthy winner. The other movies in contention included American Siege, Apex, Deadlock and Out Of Death.

The actor's family, including his wife Emma Heming-Willis and ex-wife Demi Moore, announced his condition on Instagram on Wednesday.

Aphasia is "impacting his cognitive abilities", the statement said.

Willis, 67, is best known for playing John McClane in the Die Hard films, which made him a star.

"With much consideration Bruce is stepping away from the career that has meant so much to him," his family wrote in a joint statement. "This is a really challenging time for our family and we are so appreciative of your continued love, compassion and support."