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Cited by 396

The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.

Olfactory dysfunction in Parkinson's disease.

Open access
Hawkes, C H, Shephard, B C, Daniel, S E·1997·Journal of Neurology, Neurosurgery & Psychiatry

Abstract

OBJECTIVE: To evaluate olfactory function in Parkinson's disease. METHODS: A standardised odour identification test was used, together with an evoked potential assessment with hydrogen sulphide. In addition, histological analysis was performed on the olfactory bulbs of cadavers who died from Parkinson's disease. RESULTS: Over 70% of patients studied (71 of 96) were outside the 95% limit of normal on the identification test in an age matched sample and there was an unusual pattern of selective loss to certain odours, not hitherto described. The evoked potentials were significantly delayed but of comparable amplitude to a control matched population. Of the 73 patients studied only 37 had a technically satisfactory record containing a clear response to both gases and of these, 12 were delayed. For H2S there was more delay on stimulating the right nostril than the left. Some patients with normal smell identification test scores had delayed evoked potentials. In the pathological examination of olfactory bulbs from eight brains, changes characteristic of Parkinson's disease (Lewy bodies) were seen in every olfactory bulb, particularly in the anterior olfactory nucleus, and were sufficiently distinct to allow a presumptive diagnosis of Parkinson's disease. CONCLUSIONS: Olfactory damage in Parkinson's disease is consistent and severe and may provide an important clue to the aetiology of the disease.

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Metadata

Authors
Hawkes, C. H., Shephard, B. C., & Daniel, S. E.
Venue
Journal of Neurology, Neurosurgery & Psychiatry
Publisher
BMJ
Published
1997-05-01
Volume
62
Issue
5
Pages
436-446
ISSN
0022-3050 (ISSN-L)
OpenAlex
W2158817049
Cited by
396
References
29
FWCI
3.39
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Olfactory dysfunction in Parkinson's disease. https://app.cochat.ai/papers/10.1136/jnnp.62.5.436
The paper
Hawkes, C. H., Shephard, B. C., & Daniel, S. E. (1997). Olfactory dysfunction in Parkinson's disease. Journal of Neurology, Neurosurgery & Psychiatry. https://doi.org/10.1136/jnnp.62.5.436

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.