Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Congenital Myopathy ?
    ### Response:
    A myopathy is a disorder of the muscles that usually results in weakness. Congenital myopathy refers to a group of muscle disorders that appear at birth or in infancy. Typically, an infant with a congenital myopathy will be "floppy," have difficulty breathing or feeding, and will lag behind other babies in meeting normal developmental milestones such as turning over or sitting up.
    