Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Pyomyositis ?
    ### Response:
    Pyomyositis is rare bacterial infection of the skeletal muscle (the muscles used for movement). Signs and symptoms may include pain and tenderness of the affected muscle, fever, and abscess formation. If left untreated, the abscess may extend into the bone and joint or blood poisoning may occur.
    