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First received: December 15, 2025

Clinical Trial: Effects of Isotretinoin on Smell

Study Status: COMPLETED

Recruit Status: COMPLETED

Condition: Smell Dysfunction

Study Type: INTERVENTIONAL


Official Title: Effects of Isotretinoin on Nasal Mucociliary Clearance and Olfactory Function

Brief Summary: Isotretinoin is a common medicine used to treat moderate to severe acne. It often causes dryness of the skin and the inside of the nose. Because a normal sense of smell depends on a healthy nasal lining, this dryness may affect how well a person can smell.This study will examine whether isotretinoin treatment changes the sense of smell in adults with acne. Before starting isotretinoin, participants will complete a standardized smell test and two short questionnaires about nasal symptoms and quality of life: the…

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