Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) fucosidosis ?
    ### Response:
    Fucosidosis is a condition that affects many areas of the body, especially the brain. Affected individuals have intellectual disability that worsens with age, and many develop dementia later in life. People with this condition often have delayed development of motor skills such as walking; the skills they do acquire deteriorate over time.
    