ArticleBrain sciences2021
Frequency and Determinants of Olfactory Hallucinations in Parkinson's Disease Patients.
Article in Brain sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 41 citations in OpenAlex.
- Non-visual hallucinations in Parkinson's disease: a systematic review.Journal of neurology · 2023Pooled it
- Association between β2-Adrenoreceptor Medications and Risk of Parkinson's Disease: A Meta-Analysis.Medicina (Kaunas, Lithuania) · 2021Pooled it
- Redefining Non-Motor Symptoms in Parkinson's Disease.Journal of personalized medicine · 2025Review
- What does it mean when the pleasant smells come and go? Correlation between UPSIT odor identification status and fluctuation of non-motor symptoms in Parkinson's disease.Acta neurologica Belgica · 2025Article
- Clinical and electroencephalographic correlates of carbamazepine-associated hiccups in epileptic patients.Annals of medicine and surgery (2012) · 2024Review
- The greatest loss of unpleasant smells may be related to the risk of more severe PD symptoms.Frontiers in neurology · 2024Article
- Phantosmia in Parkinson's Disease: A Systematic Review of the Phenomenology of Olfactory Hallucinations.Neurology international · 2023Review
- Hiccups, Hypersalivation, Hallucinations in Parkinson's Disease: New Insights, Mechanisms, Pathophysiology, and Management.Journal of personalized medicine · 2023Review
- High rates of blood transfusion associated with Parkinson's disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022Article
- Non-Contact Hand Movement Analysis for Optimal Configuration of Smart Sensors to Capture Parkinson's Disease Hand Tremor.Sensors (Basel, Switzerland) · 2022Article
- Mortality of Parkinson's disease in Italy from 1980 to 2015.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022Article
- Dysosmia Is a Predictor of Motor Function and Quality of Life in Patients with Parkinson's Disease.Journal of personalized medicine · 2022Article
- Does Olfactory Dysfunction Correlate with Disease Progression in Parkinson's Disease? A Systematic Review of the Current Literature.Brain sciences · 2022Review
- Dysregulation of Human Somatic piRNA Expression in Parkinson's Disease Subtypes and Stages.International journal of molecular sciences · 2022Article
- Serum Uric Acid Levels in Parkinson's Disease: A Cross-Sectional Electronic Medical Record Database Study from a Tertiary Referral Centre in Romania.Medicina (Kaunas, Lithuania) · 2022Article
- Rasagiline Withdrawal Syndrome in Parkinson's Disease.Brain sciences · 2022Article
- Olfactory Impairment in Parkinson's Disease Patients with Tremor Dominant Subtype Compared to Those with Akinetic Rigid Dominant Subtype: A Pilot Study.Brain sciences · 2022Article
- First-episode olfactory hallucination in a patient with anxiety disorder: A case report.Frontiers in psychiatry · 2022Article
- Incidence and spatial distribution of adult-onset primary malignant and other central nervous system tumors in Southern Sardinia, Italy.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022Article
- Qualitative smell/taste disorders as sequelae of acute COVID-19.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2021Article
Corrections and comments
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundOlfactory dysfunctions and hallucinations are considered common nonmotor symptoms in Parkinson's disease (PD). Visual and auditory hallucinations are well-known; however, olfactory hallucinations (OHs) are not fully investigated. The aim of this study was to evaluate OHs in PD patients, and their correlation to motor impairment, cognitive abilities, visual and auditory hallucinations, and olfactory and gustatory function.
methodsA sample of 273 patients was enrolled: 141 PD patients (mean age ± SD: 70.1 ± 9.5 years) and 132 healthy controls (mean age ± SD: 69.4 ± 9.6 years). In all patients, the following parameters were evaluated: motor symptoms (UPDRS-III), olfactory function, cognitive abilities, and occurrence of OH, gustatory hallucinations (GHs), and visual/auditory hallucinations.
resultsOHs were found only in PD patients with a percentage of 11.3%. Among PD patients with OHs, 2.8% also presented GHs. High significant frequencies of females, the presence of visual/auditory hallucinations, and a high mean UPDRS-III score were found in patients with OHs related to patients without them. Binary logistic regression evidenced the presence of visual/auditory hallucinations and sex as main variables predicting the presence of OHs.
conclusionsOur data indicated that OHs occur frequently in PD patients, especially in women, and often concomitant with visual and auditory hallucinations, without any association with olfactory impairment.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.