This type of neurofibromatosis accounts for 2 to 5 percent of cases. It is known as bilateral acoustic neurofibromatosis and is less common. This disease is characterized by tumors on the eighth cranial nerve, which can lead to hearing loss, headaches, problems with facial movements, problems with balance, and difficulty walking. Hearing loss may be noted as early as the teenage years. Other clinical signs of NF II may include seizures, neurofibromas (skin nodules), and café-au-lait spots (although this is not as common as in NF I).