Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) pseudohypoaldosteronism type 2 ?
    ### Response:
    Pseudohypoaldosteronism type 2 (PHA2) is caused by problems that affect regulation of the amount of sodium and potassium in the body. Sodium and potassium are important in the control of blood pressure, and their regulation occurs primarily in the kidneys.  People with PHA2 have high blood pressure (hypertension) and high levels of potassium in their blood (hyperkalemia) despite having normal kidney function.
    