A proposed map showing the quality of dementia care around the country could help drive up standards, according to the Alzheimer's Society.
Its director of external affairs, Alison Cook, told BBC Radio 4's Today programme:
She said that just being diagnosed can help patients by providing access to advice, social care and by enabling them to plan for their future.
Broadcaster and Alzheimer's Society ambassador Angela Rippon told ITV News that dementia sufferers are fearful of leaving their homes because some communities do not understand their condition.
When asked why some people are reluctant to leave their homes, Rippon said:
She added: "If you have a society where people don't understand the needs of people with dementia, don't understand how to recognise it, the support that someone with dementia needs, then obviously as an individual you are going to withdraw back inside yourself.
"You're not going to want to go out into the public and be humiliated in that way."
The isolation dementia sufferers endure is "shocking" and "saddening" and can be avoided, the head of a leading health charity has said.
Alzheimer's Society chief executive Jeremy Hughes urged communities to challenge stigma to "give confidence" to people with dementia.
Just under one in 10 (9%) of dementia sufferers will venture out at least once a month, according to a new report by the Alzheimer's Society.
The report also warns many dementia sufferers are unable to take part in activities they enjoyed before they developed the condition.
Dementia is a "time bomb", according to Health Secretary Jeremy Hunt, and the Government will be "backing" any community actively supporting local sufferers.
It is estimated that 800,000 people suffer from dementia in the UK. It has been estimated that the figure will soar to 1.7 million by 2051.
According to the Alzheimer's Society, their survey on the lives of dementia sufferers revealed:
- At least 28% of sufferers had given up leaving their homes altogether.
- Almost one in 10 (9%) of respondents said they had to give up all the activities they were involved in before their illness began.
- The survey found 44% of sufferers feel like a burden so avoid getting involved in local life.
- Only two in every five sufferers think their local area is capable of helping them live well with their dementia.
More than 180,000 of all dementia sufferers feel "trapped in their own homes" by the disease, a charity has warned.
Hughes added that the society is working with organisations such as the Association of Chief Police Officers and the Missing Persons Bureau to ensure people with dementia feel secure and included in their communities wherever they live.
Fewer than half of the people suffering from dementia, who currently live in care homes, enjoy a good quality of life, a charity has warned.
The report from the Alzheimer's Society also found that record numbers of people in care homes have the condition.
It said 80 per cent of people in residential care homes have either memory loss or dementia.
Previous estimates put the number of people with the condition at just over 60 per cent.
Richard Briers became an Alzheimer's Society ambassador in 2007, after his poignant role in the TV drama Dad where he played the husband of a person with dementia.