Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Pili torti ?
    ### Response:
    Pili torti is a rare hair condition characterized by fragile hair. In pili torti hair has a flattened shaft with clusters of narrow twists at irregular intervals. Some cases may be inherited in autosomal dominant or autosomal recessive patterns, while others are acquired.
    