Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) beta-mannosidosis ?
    ### Response:
    Beta-mannosidosis is a rare inherited disorder affecting the way certain sugar molecules are processed in the body.  Signs and symptoms of beta-mannosidosis vary widely in severity, and the age of onset ranges between infancy and adolescence. Almost all individuals with beta-mannosidosis experience intellectual disability, and some have delayed motor development and seizures.
    