Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Leukoplakia ?
    ### Response:
    Leukoplakia is a condition in which thickened, white patches form on the tongue, gums, inside of the cheek, or sometimes on the outer female genitals. Although the sores can vary in appearance, they are usually white or gray; thick; and slightly raised with a hard surface.
    