Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Tremor ?
    ### Response:
    Tremors are unintentional trembling or shaking movements in one or more parts of your body. Most tremors occur in the hands. You can also have arm, head, face, vocal cord, trunk, and leg tremors. Tremors are most common in middle-aged and older people, but anyone can have them.
    