Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of High Blood Pressure and Kidney Disease ?
    ### Response:
    Most people with high blood pressure do not have symptoms. In rare cases, high blood pressure can cause headaches.
                
Kidney disease also does not have symptoms in the early stages. A person may have swelling called edema, which happens when the kidneys cannot get rid of extra fluid and salt.
    