What should I do if it is indeed a nail fungus? Thank you for your help!

Hello and thank you for your question!

Nail fungus requires a visit to the doctor :)

Indeed, effective treatments are under prescription, so you need to see a doctor to establish the diagnosis and then get the prescription.

Over-the-counter products (on the shelves in pharmacies) do not work to treat nail fungus.

Have a nice day!

Emmanuelle