question: My boyfriend is a diabetic and his foot has been red, swollen & very painful the last year. The doctors here said it was cellulitis and he was on Bactrim for 8 months. It didn't clear it up. Then they put him on several different creams and  nothing. His sugars have been under control. It is not getting bigger and the area has almost covered his whole foot. They took xrays scans & its not in the bone. He doesn't run a fever. What can this be. It started out looking like a spider bite a year ago