Thanks for your query.
This is usual for the tissues to grow over such a spot as this is the body's natural instinct to protect the body from possible ill-effects of the local problem.This is a natural response.
You can consult a Doctor who would do cauterization of the area so that the growing mass is removed and also advise you whether you need a small surgery to removed the ingrowing part of the nails from its bed for permanent cure.
In the meantime you can file-up the only the mid part of the nail so that the thinning in the center helps the lateral parts of the nails to get lifted off the bed and the problem may be solved.
I hope you understand what I mean by and helps you to get a permanent cure.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.