Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Brody myopathy ?
    ### Response:
    How is Brody disease diagnosed? Brody disease is suspected in people with the characteristic symptoms of this disorder (e.g., peudomyotonia, myoglobinuria etc...). In addition, people with this disease may have normal or slightly elevated creatine kinase levels.
    