Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Waardenburg syndrome ?
    ### Response:
    Waardenburg syndrome is a group of genetic conditions that can cause hearing loss and changes in coloring (pigmentation) of the hair, skin, and eyes. Although most people with Waardenburg syndrome have normal hearing, moderate to profound hearing loss can occur in one or both ears.
    