Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Liddle syndrome ?
    ### Response:
    Liddle syndrome is a rare, inherited form of high blood pressure (hypertension). The condition is characterized by severe, early-onset hypertension associated with decreased levels of potassium, renin and aldosterone in blood plasma. Children usually have no symptoms; adults can present with symptoms of low potassium levels (hypokalemia) such as weakness, fatigue, muscle pain (myalgia), constipation or palpitations.
    