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The results of their study, published in the journal Movement Disorders.

A group of experts working under the umbrella of the International Parkinson and Movement Disorder Society (MDS), have developed a new tool for healthcare professionals that they hope will mark a significant advancement in the diagnosis and treatment of Parkinson鈥檚 disease, especially in the early stages. The results of their study, published in the journal听Movement Disorders, could also have a major impact on the quality of research on Parkinson鈥檚 disease.听

Parkinson鈥檚 disease (PD) is a neurological condition related to the death of specific brain cells, including cells that control movement, mood, sleep and cognition. The symptoms, which include tremors, slowness of movement, stiffness or rigidity, sleep disorders, loss of the sense of smell, depression, and cognitive dysfunction, can appear in people as young as their thirties, but more commonly appear around the age of 60. It is estimated that the disease touches more than one in 50 people in this age group.听

Currently, diagnosis of PD can only be established through an analysis of medical history and a neurological examination by a clinician with expertise in movement disorders 鈥� no objective test for the disease exists. As the symptoms of PD often resemble those of other neurological disorders, the rate of misdiagnosis can be as high as 25 per cent, which causes distress in patients.听 It also creates a challenge for researchers as the data collected in clinical studies can become compromised by misdiagnosis in their pool of subjects.听

The new criteria gathered knowledge and data from movement disorder experts around the world to create the most comprehensive diagnostic criteria ever developed for the disease, with the aim of improving and broadening diagnosis and treatment of the disease, especially in the early stages.听

鈥淚n light of the latest scientific insights and technological advances, we were able to establish a new list of criteria based on expert clinical diagnosis,鈥� says Dr. Ron Postuma, co-Chair of the MDS task force, who is also a researcher in neurosciences at the Research Institute of the 平特五不中 Health Centre and at The Neuro, and associate professor in the Department of Neurology and Neurosurgery at 平特五不中. 鈥淥ur aim was to create a benchmark that will systematize the diagnostic process, make it reproducible across centers and that will enable a wider range of non PD-specialized clinicians to provide patients with an accurate diagnosis.鈥�

鈥淭hese criteria accent how Parkinson's disease is much more than a simple motor disorder, now incorporating motor and non-motor symptoms as well as the genetic component in some forms of PD,鈥� adds Dr. Daniela Berg, Chair of the MDS task force and Associate Professor at the University of T眉bingen, Germany.

The research team is proposing a new stage classification of the disorder with the aim of focusing attention on the early stages of PD. 鈥淲ith this new classification our goal is to set up a research agenda that will help identify the features that signal the presence of the disease early on,鈥� explains Dr. Postuma. 鈥淥ur hope is that, as research advances, our understanding of the mechanisms at play in the disorder will enable us to develop therapies and treatments that can be administered early in this process, eventually slowing or stopping the progression of PD altogether.鈥澨�

An estimated 100,000 Canadians live with PD. Although some drugs and clinical treatments can help control or minimize symptoms there is currently no cure.

About the study

The articles听听补苍诲听听are available online via Wiley Online Library.听

The Neuro
The Montreal Neurological Institute and Hospital 鈥� The Neuro---is a world-leading destination for brain research and advanced patient care. Since its founding in 1934 by renowned neurosurgeon Dr. Wilder Penfield, The Neuro has grown to be the largest specialized neuroscience research and clinical center in Canada, and one of the largest in the world. The seamless integration of research, patient care, and training of the world鈥檚 top minds make The Neuro uniquely positioned to have a significant impact on the understanding and treatment of nervous system disorders. The Montreal Neurological Institute is a 平特五不中 research and teaching institute. The Montreal Neurological Hospital is part of the Neuroscience Mission of the 平特五不中 Health Centre. For more information, please visit听

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The Research Institute of the 平特五不中 Health Centre

The Research Institute of the 平特五不中 Health Centre (RI-MUHC) is a world-renowned biomedical and healthcare research centre. The Institute, which is affiliated with the Faculty of Medicine of 平特五不中, is the research arm of the 平特五不中 Health Centre (MUHC) - an academic health centre located in Montreal, Canada, that has a mandate to focus on complex care within its community. The RI-MUHC supports over 500 researchers, and over 1,200 students, devoted to a broad spectrum of fundamental, clinical and health outcomes research at the Glen and the Montreal General Hospital sites of the MUHC. Our research facilities offer a dynamic multidisciplinary environment that fosters collaboration and leverages discovery aimed at improving the health of individual patients across their lifespan. Over 1,600 clinical research projects and trials are conducted within the organization annually. The RI-MUHC is supported in part by the Fonds de recherche du Qu茅bec - Sant茅 (FRQS).听

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About the International Parkinson and Movement Disorder Society

The International Parkinson and Movement Disorder Society (MDS) is a professional society of over 4,500 clinicians, scientists, and other healthcare professionals dedicated to improving patient care through education and research. For more information about MDS, visit听