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Lichen planus may mess with your sense of smell and taste, study finds

NCT ID NCT07570706

Knowledge-focused Sponsor: Istanbul Training and Research Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed study looked at whether lichen planus, a chronic inflammatory condition, affects smell and taste. 88 adults (patients and healthy controls) took smell and taste tests and had oral and nasal exams. The goal was to see if mucosal involvement is linked to sensory changes, which could improve future care.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could help doctors better understand and manage smell and taste problems in people with lichen planus.
What could go wrong
This is a small, completed observational study, so it only shows possible links—not proof of cause or treatment. Results may not apply to everyone with lichen planus.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

88 people

The number who actually took part.

Started

Jan 2026

Finished

Apr 2026

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The study includes adults aged 18-65 years with a clinical diagnosis of lichen planus, as well as healthy volunteers without lichen planus. Participants were assessed for smell and taste function, and the patient group also underwent oral and nasal mucosal examinations, including nasal endoscopy. Both male and female participants were included.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Age 18-65 years Clinically diagnosed with lichen planus (patient group) Healthy individuals without lichen planus (control group) Willing and able to provide informed consent Exclusion Criteria: Nasal septum deviation Nasal polyposis, congenital olfactory dysfunction, chronic rhinosinusitis, or allergic rhinitis History of head trauma History of nasal or paranasal surgery Psychiatric or neurological disorders (e.g., Parkinson's disease, Alzheimer's disease) Persistent loss of smell following COVID-19 infection Pregnancy or breastfeeding

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Conditions

The condition(s) this trial relates to.

lichen planus

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Lichen planus

Contacts and locations

Locations

  • S.B.U. Istanbul Training and Research Hospital

    Istanbul, Istanbul, 34098, Turkey (Türkiye)

More trials for these conditions

Other studies related to the condition(s) this trial covers.