Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Dermatomyositis ?
    ### Response:
    What are the signs and symptoms of Dermatomyositis? The signs and symptoms of dermatomyositis may appear suddenly or develop gradually, over weeks or months. The cardinal symptom of dermatomyositis is a skin rash that precedes or accompanies progressive muscle weakness.
    