Dementia is a serious and often devastating condition for both the sufferer and their loved ones.
A syndrome related to the ongoing decline of the brain, it can result in memory loss, behavioural changes and even mobility issues.
As with any medical problem, the sooner you spot symptoms of dementia and seek help, the better support options the patient has.
However, a new survey by the Alzheimer's Society revealed that only one in three people tell their doctors about themselves or a loved one experiencing dementia symptoms within the first month.
The poll of 1,100 people showed that many people stayed quiet because they weren't certain which symptoms were dementia-like and which were just normal ageing.
READ MORE: Expert shares how to spot the 'earliest' signs of dementia - 'Get to your GP ASAP'
"One in three people (33 percent) who notice symptoms of dementia in themselves or a loved one keep their fears to themselves for over a month," the charity said.
According to the survey, only 15 percent of people addressed the issue straight away, while 11 percent said they still haven't raised their concerns after spotting the first symptom.
This has a knock-on impact on how quickly people are able to get help, and 23 percent waited more than six months before they spoke to a medical professional.
Early signs of dementia including difficulty following a conversation, difficulty concentrating and memory loss could be mistaken for normal signs of ageing such as hearing loss and forgetfulness.
This was the case for actor Bruce Willis, whose first symptoms of dementia were put down to hearing loss by his family.
In an op-ed for Vogue last May, his daughter Tallulah wrote that the family assumed he had hearing damage from working on the 1988 action film, Die Hard.
"I've known that something was wrong for a long time," she said.
She added that family members would often encourage each other to, "Speak up! Die Hard messed with Dad's ears."
"Later, that unresponsiveness broadened, and I sometimes took it personally," Tallulah wrote.
Besides the confusion with ageing, the survey showed that 16 percent of participants admitted they were "avoiding" a diagnosis because they were worried about how their personal relationships would change.
And 44 percent of people in the survey said they were concerned that their caretakers or family members would begin to "talk down" to them.
Kate Lee, chief executive officer of the Alzheimer's Society, said: "We can't continue to avoid the 'd' word - we need to face dementia head on.
"As soon as you realise something is not right, come to Alzheimer's Society - you can use our symptoms checklist to help have that all-important first chat with your GP."
The NHS lists the earliest signs of dementia as:
More advanced dementia can lead to:
If you think you or someone you know is experiencing symptoms of dementia you should speak to a doctor.