Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Klippel Feil syndrome ?
    ### Response:
    What are the signs and symptoms of Klippel Feil syndrome? Klippel Feil syndrome is characterized by the fusion of 2 or more spinal bones in the neck (cervical vertebrae). The condition is present from birth (congenital). The 3 most common features include a low posterior hairline (at the back of the head); a short neck; and limited neck range of motion.
    