Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) pseudoachondroplasia ?
    ### Response:
    Pseudoachondroplasia is an inherited disorder of bone growth. It was once thought to be related to another disorder of bone growth called achondroplasia, but without that disorder's characteristic facial features. More research has demonstrated that pseudoachondroplasia is a separate disorder.
    