Thanks for the query.
This presentation can be seen with many diseases. This is limited information to make precise recommendations. The best option is to consult a Dermatologist to understand the condition. A thorough evaluation if necessary should be done. Hope it helps you.
Next Steps
Start on biotin supplements and food rich in iron content.
Health Tips
You can consult me on Practo Direct for personal recommendations as on public platforms, I cannot generate a prescription.