Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Diabetic Kidney Disease ?
    ### Response:
    People with diabetic kidney disease do not have symptoms in the early stages. As kidney disease progresses, a person can develop edema, or swelling. Edema happens when the kidneys cannot get rid of the extra fluid and salt in the body. Edema can occur in the legs, feet, or ankles and less often in the hands or face.
    