Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) cerebrotendinous xanthomatosis ?
    ### Response:
    Cerebrotendinous xanthomatosis is a fat (lipid) storage disorder that affects many areas of the body. People with this disorder cannot break down certain lipids effectively, specifically different forms of cholesterol, so these fats accumulate in various areas of the body.
    