Australia's nursing homes will be swamped by a tidal wave of Parkinson's sufferers unless governments act now, an expert warns.

A Sydney-based Parkinson's disease expert says rates are expected to jump 80 per cent over the next 20 years because of Australia's aging population.

Currently 64,000 people have the progressive brain disease that causes uncontrollable tremors, loss of movement and bowel and bladder problems.

Associate Professor Simon Lewis from the University of Sydney is expected to present new research on the benefits of community-based Parkinson's nurses at a nursing conference on the Gold Coast on Friday.

Professor Lewis says Australia must adopt the UK approach of employing the specialist nurses or pay the price in nursing home care costs.

'You have to have a way of addressing this tidal wave of patients who are coming over the next 20 years,' he told AAP.

His research indicates that access to specialist nurses in the community can stave off the need for nursing home accommodation.

He compared the health of Parkinson's sufferers and their carers in Shoalhaven, NSW, before and six months after they were placed in the care of a specialist nurse.

'Very clearly what we saw is that during the time they had been seeing the nurse the patient's health had improved,' he said.

'More importantly, the carers themselves reported that their own health had improved.'

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Parkinson's patients to swamp homes