Los Angeles: Hollywood superstar Bruce Willis, who is known for his strong performance in Die Hard franchise, is suffering from frontotemporal dementia, his family confirmed.

His wife Emma Heming-Willis said in an Instagram post: " Our family wanted to start by expressing our deepest gratitude for the incredible outpouring of love, support and wonderful stories we have all received since sharing Bruce’s original diagnosis. In the spirit of that, we wanted to give you an update about our beloved husband, father and friend since we now have a deeper understanding of what he is experiencing."

"Since we announced Bruce’s diagnosis of aphasia in spring 2022, Bruce’s condition has progressed and we now have a more specific diagnosis: frontotemporal dementia (known as FTD). Unfortunately, challenges with communication are just one symptom of the disease Bruce faces. While this is painful, it is a relief to finally have a clear diagnosis," she said.

Bruce was diagnosed with aphasia last year.

What is FTD?

Frontotemporal dementia is an umbrella term for a group of brain disorders that primarily affect the frontal and temporal lobes of the brain. These areas of the brain are generally associated with personality, behavior and language, as per Mayo Clinic website.

Frontotemporal dementia can be misdiagnosed as a psychiatric problem or as Alzheimer's disease. But frontotemporal dementia tends to occur at a younger age than does Alzheimer's disease. Frontotemporal dementia often begins between the ages of 40 and 65 but occurs later in life as well. FTD is the cause of approximately 10% to 20% of dementia cases, reads the website.

Bruce and his career in movies:

 Bruce achieved fame with a leading role on the comedy-drama series Moonlighting (1985–1989) and appeared in over a hundred films, gaining recognition as an action hero after his portrayal of John McClane in the Die Hard franchise (1988–2013) and other roles.

Willis's other credits include The Last Boy Scout (1991), Death Becomes Her (1992), Pulp Fiction (1994), 12 Monkeys (1995), The Fifth Element (1997), Armageddon (1998), The Sixth Sense (1999), Unbreakable (2000), Sin City (2005), Red (2010), Moonrise Kingdom (2012), Looper (2012) and Red 2 (2013).