Could a dog bite on my leg cause this recent skin infection?

A year or so ago my friends dog that is an English Bull dog attacked me one day when she had her off the leash. Her dog bit my left lower leg on my shin. It did hurt like hell and punctured my skin. I dismissed it because it was my friend despite her dog not properly socialized. However, a year or so later I noticed where the dog punctured my shin, it formed bumps and those bumps never went a way. I then had varicose veins appear later on the bite site. Now, I am experiencing what appears to be a skin infection where the bite site was before. It is re-occurring itching and open lesions from scratching. Now the skin is really scaly like the barrier of the skin is depleting. Could this be from the dog bite? Could it had caused some form of blockage in the veins leading to this belated infection? It is only localized where the bite site was. What do I do? I do recall her dog never being updated on vaccines etc.