Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) mandibuloacral dysplasia ?
    ### Response:
    Mandibuloacral dysplasia is a condition that causes a variety of abnormalities involving bone development, skin coloring (pigmentation), and fat distribution. People with this condition may grow slowly after birth. Most affected individuals are born with an underdeveloped lower jaw bone (mandible) and small collar bones (clavicles), leading to the characteristic features of a small chin and sloped shoulders.
    