Thanks for the query
You might have developed a callosity.
It develops due to constant friction.
Another possibility is pyogenic granuloma
A photograph would have helped me in giving a closer diagnosis.
It can be cured by using keratolytics like salicylic acid
surgical removal can also be done.
Please meet a dermatologist
for exact diagnosis.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.