Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Juvenile spondyloarthropathy ?
    ### Response:
    Juvenile spondyloarthropathy refers to a group of rheumatic diseases that develop during childhood and are characterized by inflammation of the entheses (the regions where tendons or ligaments attach to bones) and joints. The joints of the lower extremities are generally affected first followed by the sacroiliac joints (between the pelvis and the spine) and spinal joints some years later.
    