Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Lesch Nyhan syndrome ?
    ### Response:
    Lesch Nyhan syndrome is a condition characterized by neurological and behavioral abnormalities and the overproduction of uric acid in the body. It occurs almost exclusively in males. Signs and symptoms may include inflammatory arthritis (gout), kidney stones, bladder stones, and moderate cognitive disability.
    