Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Cardiomyopathy ?
    ### Response:
    Some people who have cardiomyopathy never have signs or symptoms. Others don't have signs or symptoms in the early stages of the disease.
                
As cardiomyopathy worsens and the heart weakens, signs and symptoms of heart failure usually occur. These signs and symptoms include:

    