Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Mucolipidosis type 4 ?
    ### Response:
    Mucolipidosis type 4 is a metabolic condition that affects the body's ability to process certain carbohydrates and fats. As a result, these materials accumulate in cells leading to the various signs and symptoms of the condition. Most people with mucolipidosis type 4 develop severe psychomotor (mental and motor skills) delay by the end of the first year of life and visual impairment that worsens over time.
    