Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Peripheral Arterial Disease (P.A.D.) ?
    ### Response:
    Your Family and Medical History P.A.D. is diagnosed based on a person's medical and family histories, a physical exam, and results from medical tests. To learn about your medical and family histories, your doctor may ask about - your risk factors for P.A.D.
    