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Clinical Trial Summary

Olfactory dysfunction is a defining symptom of COVID-19 infection. Studies have demonstrated improved olfaction in patients with post infectious olfactory dysfunction after an olfactory training (OT). The aim of this study is to assess the clinical outcomes of olfactory training (12 weeks) therapy in the treatment of persistent olfactory dysfunctions after COVID-19. Specially, we aim to compare the effectiveness of two different olfactory training (different odors) with a placebo group. A group will train themselves with 4 scents (rose, orange, clove and eucalyptus) and another group with 4 different scents (cheese, coffee, strawberries and lemon). The placebo group will train themselves with an odorless substance. Olfaction sensory evaluation will be performed by using different olfaction tests (Sniffin' Sticks and UPSIT) and complete questionnaires to assess olfactory perception and particularly parosmia and phantosmia.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT05384561
Study type Interventional
Source Université du Québec à Trois-Rivières
Contact Johannes A Frasnelli, PhD
Phone 18193765011
Email johannes.a.frasnelli@uqtr.ca
Status Recruiting
Phase N/A
Start date May 2022
Completion date March 2023

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