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Thick or yellow toenails: why appearance alone is not a diagnosis

Author: Alex Rene Ludena Aguilar · Published on · 4 min read

A visible nail change can have very different causes; only a medical professional can identify them.

When we must refer you

We do not diagnose fungus or any other condition. Diagnosis belongs to a licensed medical provider.

Appearance says little on its own

A thick, dull, or yellowish nail can reflect very different causes. Interpreting that change without a professional evaluation can lead to wrong conclusions and unnecessary products.

What a cosmetic service is — and is not

Thinning, trimming, and filing are cosmetic services: they improve comfort and maintenance, but they do not treat any condition or change its cause.

  • Cosmetic: thinning, trimming, filing, cleansing on intact skin.
  • Medical: diagnosing, prescribing, treating a nail condition.

When to see a medical professional

If the change is rapid or painful, comes with redness, swelling, or drainage, or affects the surrounding skin, consult a physician or licensed podiatrist before any cosmetic care.

Editorial note: this content is general and educational. It is not a substitute for evaluation by a physician or licensed podiatrist. Source review pending client confirmation before publication.

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