Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Multiple pterygium syndrome lethal type ?
    ### Response:
    Multiple pterygium syndrome lethal type is a very rare genetic condition affecting the skin, muscles and skeleton. It is characterized by minor facial abnormalities, prenatal growth deficiency, spine defects, joint contractures, and webbing (pterygia) of the neck, elbows, back of the knees, armpits, and fingers.
    