Is it a self diagnosis or diagnosis given by some doctor ?
None can prescribe without medicine without confirming your diagnosis as it is a medicolegal risk now a days.
So if you are looking for some free treatment advise then better go to some pharmacist and take the medicine at your risk.
Next Steps
visit/consult dermatologist (in person or online), give required information about your problem to confirm your diagnosis and get your medicine prescription.
Health Tips
Self medication without confirmatory diagnosis can mask your original condition and make the situation difficult to diagnose by treating doctor. Ultimately it can increase your suffering.