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Index/Topics/Mucosal Irritation

Mucosal Irritation

The risk of irritation to mucous membranes from the use of menthol/camphor products, especially when applied inside the nose, ears, or eyes.

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Jan 29, 2026
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What are the documented risks of using topical menthol/camphor products near the ear or nose?

are designed for external skin use and are repeatedly warned against being applied inside the nose, ears, or eyes because they can irritate and, in some circumstances, cause more serious local or syst...

Feb 4, 2026

How do menthol, camphor, and capsaicin in patches work to relieve joint pain?

that combine menthol, camphor, and capsaicin relieve joint pain primarily by activating or desensitizing skin sensory receptors (TRP channels) to produce cooling/heat sensations, counterirritation, an...