Bruce Willis’s daughter Tallulah has spoken about her father’s “really aggressive” dementia and why it is so important for her family to be open about it.

The Hollywood actor, 68, was diagnosed with frontotemporal dementia (FTD) a year after his family revealed he was suffering from aphasia, a condition affecting speech and language.

What’s going on with my dad - he has a really aggressive cognitive disease, a form of dementia that’s very rare," Tallulah Willis told The Drew Barrymore Show on Wednesday.

Willis added they were candid about the condition because “it’s who we are as a family”.

“But also, it’s really important for us to spread awareness about FTD because there’s not enough information out there,” she said.