Age and Ageing, Vol 28, 99-102, Copyright © 1999 by British Geriatrics Society
J Meara, BK Bhowmick and P Hobson
OBJECTIVES: to study the diagnostic accuracy for parkinsonism and
Parkinson's disease in a community-based sample of subjects on anti-
parkinsonian medication. METHODS: computerized prescribing records in
general practice were used to create a community-based disease register for
Parkinson's disease. Subjects were examined to establish the likely
diagnosis using recommended clinical diagnostic criteria. RESULTS: of 402
cases, parkinsonism was confirmed in 74% and clinically probable
Parkinson's disease in 53%. The commonest causes of misdiagnosis were
essential tremor, Alzheimer's disease and vascular pseudo-parkinsonism.
Over one-quarter of subjects did not benefit from anti-parkinsonian
medication. CONCLUSIONS: there is difficulty in diagnosing parkinsonism and
Parkinson's disease in elderly subjects and we suggest early referral of
those suspected of having parkinsonism for specialist assessment.
ARTICLES
Accuracy of diagnosis in patients with presumed Parkinson's disease
University Department of Geriatric Medicine, Glan Clwyd Hospital, Rhyl, North Wales, UK.
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