Registry for patients with smell and taste disorders

Prospective Registry of Outcome and Correlates of Chemosensory Dysfunction at the Smell & Taste Clinic of UZ Leuven

Universitaire Ziekenhuizen KU Leuven · NCT06456008

This study is trying to understand how common smell and taste problems are in people from Belgium and Flanders, especially after COVID-19, by having participants take tests and answer questions about their experiences.

Quick facts

Study typeObservational
Enrollment500 (estimated)
SexAll
SponsorUniversitaire Ziekenhuizen KU Leuven (other)
Locations1 site (Leuven, Vlaams-Brabant)
Trial IDNCT06456008 on ClinicalTrials.gov

What this trial studies

This observational study aims to map the prevalence and characteristics of smell and taste disorders in the Belgian/Flemish population. It involves standard diagnostic tests and structured questionnaires to assess the severity, impact, and progression of these disorders. The initiative was launched in response to the increasing cases of smell dysfunction, particularly following COVID-19. Participants will provide informed consent and undergo psychophysical testing to contribute to a comprehensive registry.

Who should consider this trial

Good fit: Ideal candidates include individuals experiencing olfactory or taste disorders who can cooperate with testing and provide informed consent.

Not a fit: Patients with severe cognitive impairments that prevent them from understanding instructions or communicating their choices may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding and management of smell and taste disorders, leading to improved patient care.

How similar studies have performed: While similar observational studies have been conducted, this specific registry approach focusing on post-COVID-19 related disorders is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion criteria:

* The psychophysical testing as well as the questionnaires require a cooperative participant who can understand and follow instructions and communicate their choices.
* Informed consent is necessary upon participation for prospective registry.

There are no exclusion criteria related to sex, gender, or ethnicity. There are no exclusion criteria related to medical history or prior treatments.

Where this trial is running

Leuven, Vlaams-Brabant

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Olfactory Disorder, Taste Disorders, Smell Dysfunction, Smell Disorder

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.