Neurofibromatosis Type 2 (NF2)
Neurofibromatosis encompasses a set of distinct genetic disorders that cause tumors to grow along various types of nerves and, in addition, can affect the development of non-nervous tissues such as bones and skin. Neurofibromatosis causes tumors to grow anywhere on or in the body.
Neurofibromatosis 2 (NF2): also known as Bilateral Acoustic NF (BAN) is much rarer, occurring in 1:25,000 births. NF2 is characterized by multiple tumors on the cranial and spinal nerves, and by other lesions of the brain and spinal cord. Tumors affecting both of the auditory nerves are the hallmark. Hearing loss beginning in the teens or early twenties is generally the first symptom.
Source Cited link: http://www.ctf.org/Learn-About-NF/Learn-About-NF.html