The 67-year-old hero of the "Die Hard" saga initially suffered from aphasia, a language disorder caused by brain damage.

But since last year, "Bruce's disease has progressed and we now have a more specific diagnosis: frontotemporal dementia," his relatives said in a statement.

"Unfortunately, the communication difficulties are just a symptom of the illness Bruce is facing," the family added, saying they were "relieved to finally have a clear diagnosis."

Frontotemporal degeneration (FTD) is a neurodegenerative disease, related to Alzheimer's disease.

People with FTD may experience memory problems, behavioral changes, or difficulty speaking or moving.

"Today, there is no treatment for this disease, a reality which we hope will be able to change in the years to come", underlined these relatives, in this press release signed by his wife Emma Heming Willis, as well as only by his ex-wife, actress Demi Moore, and his children Rumer, Scout, Tallulah, Mabel and Evelyn.

American actor Bruce Willis and his wife Emma Heming, September 24, 2009 in Los Angeles © ROBYN BECK / AFP/Archives

"As Bruce's condition evolves, we hope the media will work to bring attention to this disease, which needs much more awareness and research," they added.

According to some American specialists, frontotemporal dementia appears most often in patients aged 40 to 65, and accounts for one-fifth of dementia cases.

Infallible Hero

Bruce Willis' star had already faded before his retirement, but he remains one of Hollywood's most recognized action movie actors.

His career has forged him an image of an infallible hero, the antithesis of his current illness.

He first distinguished himself in the 1980s with a recurring role in the "Moonlight" series alongside Cybill Shepherd, but it was the action film "Die Hard" ("Piège de Cristal") in 1988 that made him an international star as the invincible John McClane.

American actor Bruce Willis, January 9, 2019 in London © Tolga AKMEN / AFP/Archives

The shaved head and smirk had become the trademark of the actor, who took over this role for two sequels in the 1990s ("58 minutes to live" and "A day in hell"), confirming his notoriety and becoming one of the references of the genre.

Highly sought after in Hollywood, he does a string of big productions, whether classic action films ("The Last Samaritan", "The Jackal") or science fiction crossovers like "The Army of the Twelve Monkeys" , which had won over the critics, or "The Fifth Element" by Luc Besson.

He will also tour with directors as famous as Brian De Palma, Robert Zemeckis but especially Quentin Tarantino, who makes him play a boxer on the return in "Pulp Fiction" in 1994, when he is at the height of his glory.

Bruce Willis will also make notable performances, for their darker and more dramatic tone, under the direction of M. Night Shyamalan with his fantastic thrillers "Sixth Sense" and "Unbreakable".

American actor Bruce Willis at the Cannes Film Festival, May 21, 2006 © FRANCOIS GUILLOT / AFP/Archives

He continued to tour a lot, but no longer found the same success and his notoriety eroded little by little, despite incursions into other genres, such as comedy ("My neighbor the killer" in 2000).

He signs for two new parts of the "Die Hard" saga (in 2007 and 2013) which convince neither critics nor the public.

During the previous decade, Bruce Willis had not hesitated to make fun of himself and the clichés that stuck to his skin, as in "Top Cops" or the second part of "Expendables".

© 2023 AFP