Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Shingles ?
    ### Response:
    Caused By A Virus Shingles is caused by a virus called varicella-zoster virus -- the one that gave you chickenpox when you were a child. As you recovered from chickenpox, the sores healed and the other symptoms went away, but the virus remained. It is with you for life.
    