If you’ve heard of frontotemporal dementia (FTD), it may be because of Bruce Willis or Wendy Williams – two celebrities whose diagnoses in recent years have shed light on this infrequently discussed neurodegenerative disease. Though FTD is relatively rare, accounting for less than 10 per cent of the estimated 450,000 Australians living with dementia, it’s a common form of early-onset dementia.