When should a nail colour change be assessed?
Do not label every change as fungus or conceal it with polish. Discuss new or persistent findings with a healthcare professional.

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Appearance alone does not establish a diagnosis
Changes in nail colour or surface can have different causes. A similar-looking photograph does not establish fungus, a deficiency or another diagnosis. Note onset, new products, injuries and any pain. A new dark stripe, unexplained persistent change or a problem around the nail deserves appropriate healthcare assessment. A cosmetic provider’s opinion is not a substitute for medical diagnosis.
Record and assess before covering
It helps to show the change without a new covering and to know application and removal dates. Do not continue cosmetic treatment with shared tools over a suspected infection. Seek healthcare advice for swelling, discharge or increasing pain, and do not delay if symptoms are severe or worsening quickly. Let assessment guide treatment rather than selecting remedies yourself. Colour choice comes after understanding the nail’s current condition.
Questions to bring to your consultation
- When did the change begin?
- Were there new products, injury or pain?
- Am I planning to cover it before assessment?
This article provides general information, not an individual diagnosis, treatment plan or procedure instructions. Discuss suitability, risks and personal care with the appropriate qualified professional.