Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) multiminicore disease ?
    ### Response:
    Multiminicore disease is a disorder that primarily affects muscles used for movement (skeletal muscles). This condition causes muscle weakness and related health problems that range from mild to life-threatening.  Researchers have identified at least four forms of multiminicore disease, which can be distinguished by their characteristic signs and symptoms.
    