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Mov Disord. 2007 Apr 30;22(6):839-42.

Olfactory loss may be a first sign of idiopathic Parkinson's disease.

Author information

1
Department of Neurology, University of Dresden Medical School, Germany.

Abstract

Recent studies support the idea of olfactory dysfunction as a very early sign of idiopathic Parkinson's disease (IPD). Aim of the present study was to clinically follow-up patients with idiopathic hyposmia to find out the percentage of patients developing IPD after 4 years time. At baseline, olfactory tests had been combined with transcranial sonography of the substantia nigra and (123)I-FP-CIT SPECT imaging. At the present neurological examination, 7% of the individuals with idiopathic hyposmia had developed clinical IPD. Altogether, 13% presented with abnormalities of the motor system. Our data suggest that a combination of olfactory testing and other tests may constitute a screening tool for the risk to develop IPD.

PMID:
17357143
DOI:
10.1002/mds.21413
[Indexed for MEDLINE]

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