Nothing can be said with surety without having a look at the lesions. this could be warts.
Scraping the lesion was not a good idea - this could lead to bacterial or fungal skin infection or sweat dermatitis.
You should keep the areas clean, wear lose cotton socks, use a powder to avoid sweat collection, wear comfortable footwear.
You would probably need antibacterial and antifungal local application medications and a course of antibiotics if the lesion does not resolve.
Consult your doctor for a clinical examination. Do get your blood sugar checked too.
Let us know about how you are doing and if you have any other doubts.