Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Neurofibromatosis type 1 ?
    ### Response:
    What are the signs and symptoms of Neurofibromatosis type 1? People affected by neurofibromatosis type 1 (NF1) have an increased risk of developing many different types of tumors (both cancerous and noncancerous). Almost all people with NF1 have neurofibromas, which are benign tumors that can affect nearly any nerve in the body.
    