The Parkinson's Disease Society has launched a new campaign to highlight the importance of specialist nurses to treat the condition.
A recent inquiry into the access to health and social care services for those with the neurodegenerative disease showed that specialist nurses are "critical" to those facing the condition.
However, a "postcode lottery" means that as many as one in four people with Parkinson's have never seen or spoken to such an expert.
Steve Ford, the chief executive of the charity, said the PDS is "passionate" about ensuring that individuals with Parkinson's receive the top care and support available in order to help in managing symptoms and helping them get on with their lives.
He added: "You can help us by making a donation to our nurses' appeal. Big or small, your contribution will help us make sure that people living with Parkinson's get the services they need, wherever they live in the UK."
One major supporter of the cause is broadcaster John Stapleton, whose own mother was unable to see a Parkinson's disease nurse specialist while she had the condition.
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