Hi, since you have
diabetes , it's the main cause of non healing wound. You will require to have the control over your
sugar levels and start with specific medication to heal the wound.
I would suggest you to meet endocrinologist to help you out.
U will even suggest you to start homoeopathic medicine which are well know to help in such situation, will request you to visit homoeopath near you or consult me .
Please feel free to contact me if you have any further doubts.