Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Dowling-Degos disease ?
    ### Response:
    Dowling-Degos disease is a skin condition characterized by a lacy or net-like (reticulate) pattern of abnormally dark skin coloring (hyperpigmentation), particularly in the body's folds and creases. These skin changes typically first appear in the armpits and groin area and can later spread to other skin folds such as the crook of the elbow and back of the knee.
    