Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Focal dermal hypoplasia ?
    ### Response:
    Focal dermal hypoplasia is a genetic disorder that primarily affects the skin, skeleton, eyes, and face. The skin abnormalities are present from birth and can include streaks of very thin skin (dermal hypoplasia), cutis aplasia, and telangiectases. They also may abnormalities in the nails, hands, and feet.
    