Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Broken Heart Syndrome ?
    ### Response:
    Broken heart syndrome is a condition in which extreme stress can lead to heart muscle failure. The failure is severe, but often short-term.
                
Most people who experience broken heart syndrome think they may be having a heart attack, a more common medical emergency caused by a blocked coronary (heart) artery.
    