Treatment for diabetic foot swelling will depend on if the swelling has an additional cause. For example, if your doctor determines that there is an infection, you may be prescribed antibiotics. If there is an injury to the foot, such as a sprain or a break, your doctor will recommend medical interventions such as a cast or surgery. If there are no additional causes, measures to reduce swelling (e.g., compression, hydration, elevation, diet, etc.) will be recommended.