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Yellow nails: is it an early fungus or another cause?

3 min · Dr. Romina Orsetti


In brief

  • Yellow nails aren’t always a fungus: polish, trauma and age matter too.
  • An early fungus usually pairs the yellow colour with thickening or crumbling.
  • Telling the causes apart by sight is not reliable.
  • Having them assessed early avoids useless remedies and longer treatment paths.

Yellow toenails can point to an early fungus, but not always: polish, trauma and ageing colour them too. That is why it is worth having them assessed early.

When is the yellow an early fungus?

When we talk about an early fungus, or onychomycosis, the yellow colour is often accompanied by other signs: the nail thickens, becomes brittle or crumbles along the edge and loses its shine. Colour alone, however, is not enough to make a diagnosis.

What other causes colour the nail?

  • Dark or intense polishes worn for a long time without breaks.
  • Small repeated traumas, for example from tight shoes.
  • The natural ageing of the nail.
Telling these causes apart with the naked eye is not reliable. Having yellow nails assessed early by the podiatrist makes it possible to recognise any problem in time and avoid an unfocused DIY approach.

Frequently asked questions

Are yellow nails always a fungus?
No. The yellow colour can also be down to dark polishes worn for a long time, trauma or the ageing of the nail. That is why it is worth having them assessed rather than assuming the cause.
How can I tell if it is an early fungus?
An early fungus often pairs the yellow with thickening, brittleness or crumbling of the edge. But telling it apart by sight is not reliable: the podiatrist’s trained clinical eye is needed.
Why have yellow nails assessed early?
Acting early prevents any problem from spreading and helps set the right treatment path, without wasting time on unfocused DIY remedies.

Read more with onychomycosis: why not to improvise and thickened, yellow nails.


Concerned about your feet? Let’s talk

An assessment with a podiatrist catches the problem early and prevents complications. Prevention is better than cure: book in Osimo or Villa Musone di Loreto.