Purpose Of Review: Olfactory dysfunction is a frequent complication of SARS-CoV-2 infection. This review presents the current literature regarding the management of post-COVID-19 olfactory dysfunction (PCOD).
Recent Findings: A systematic review of the literature using the PubMed/MEDLINE, EMBASE, and Cochrane databases for the following keywords, "Covid-19," "SARS-CoV-2," "anosmia," "olfactory," "treatment," and "management" was performed. While most cases of post-COVID-19 olfactory dysfunction resolve spontaneously within 2 weeks of symptom onset, patients with symptoms that persist past 2 weeks require medical management. The intervention with the greatest degree of supporting evidence is olfactory training, wherein patients are repeatedly exposed to potent olfactory stimuli. To date, no large-scale randomized clinical trials exist that examine the efficacy of pharmacologic therapies for PCOD. Limited clinical trials and prospective controlled trials suggest intranasal corticosteroids and oral corticosteroids may alleviate symptoms.
Summary: Olfactory training should be initiated as soon as possible for patients with PCOD. Patients may benefit from a limited intranasal or oral corticosteroid course. Further research on effective pharmacologic therapies for PCOD is required to manage the growing number of patients with this condition.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8723803 | PMC |
http://dx.doi.org/10.1007/s40521-021-00297-9 | DOI Listing |
Int Forum Allergy Rhinol
January 2025
Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
In patients with severe olfactory and gustatory dysfunction, olfactory cleft opacification improves with expanded intranasal steroid treatment (EDS-FLU) relative to placebo. This is directly associated with objective and patient-reported taste/smell improvement.
View Article and Find Full Text PDFERJ Open Res
January 2025
Department of Otolaryngology-Head and Neck Surgery, University of California, Los Angeles, Los Angeles, CA, USA.
Background: Chronic rhinosinusitis (CRS) and olfactory dysfunction (OD) are prevalent disease complications in people with cystic fibrosis. These understudied comorbidities significantly impact quality of life. The impact of highly effective modulator therapy (HEMT) in young children with cystic fibrosis (YCwCF) on these disease complications is unknown.
View Article and Find Full Text PDFEur J Neurosci
January 2025
Department of Ear, Nose, and Throat, The First Affiliated of Soochow University, Suzhou, China.
This study aimed to investigate the topological properties of brain functional networks in patients with tinnitus of varying durations. A total of 51 tinnitus patients (divided into recent-onset tinnitus (ROT) and persistent tinnitus (PT) groups) and 27 healthy controls (HC) were recruited. All participants underwent resting-state functional MRI and audiological assessments.
View Article and Find Full Text PDFEur J Neurosci
January 2025
Smell and Taste Clinic, Department of Otorhinolaryngology, Technische Universität Dresden, Dresden, Germany.
Target odorant detection in mixtures has been shown to become more difficult as the number of background odorants increases and falls below chance level in mixtures with 16 components. Our aim was to investigate target odorant detection in mixtures among healthy people and compare it between dysosmic patients and age- and gender-matched controls. Participants underwent extensive olfactory testing and performed two target odorant detection tasks.
View Article and Find Full Text PDFCNS Neurosci Ther
January 2025
Department of Neurology, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China.
Objectives: Parkinson's disease (PD) is characterized by olfactory dysfunction (OD) and cognitive deficits at its early stages, yet the link between OD and cognitive deficits is also not well-understood. This study aims to examine the changes in the olfactory network associated with OD and their relationship with cognitive function in de novo PD patients.
Methods: A total of 116 drug-naïve PD patients and 51 healthy controls (HCs) were recruited for this study.
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