![]() ComplicationsĬomplications of neurofibromatosis vary, even within the same family. Researchers currently estimate that the risk of inheriting schwannomatosis from an affected parent is about 15%. The inheritance pattern for schwannomatosis is less clear. NF1 and NF2 are both autosomal dominant disorders, meaning that any child of a parent who is affected by the disorder has a 50% chance of inheriting the genetic mutation. People who have NF1 and NF2 and whose relatives aren't affected are likely to have a new gene mutation. About half of people who have NF1 and NF2 inherited the disease from an affected parent. The biggest risk factor for neurofibromatosis is a family history of the disorder. The person has a 50% chance of having an unaffected child. A person with an autosomal dominant disorder - in this example, the father - has a 50% chance of having an affected child with one changed gene. You need only one changed gene to be affected by this type of disorder. It's located on one of the nonsex chromosomes, called autosomes. In an autosomal dominant disorder, the changed gene is a dominant gene. The tumors associated with neurofibromatosis are often benign and slow growing. See your doctor if you or your child develop signs or symptoms of neurofibromatosis. Numbness or weakness in various parts of the body.Chronic pain, which can occur anywhere in the body and can be disabling. ![]() Tumors don't usually grow on both hearing nerves, so people who have schwannomatosis don't experience the same hearing loss as people who have NF2. Schwannomatosis causes tumors to develop on the cranial, spinal and peripheral nerves - but rarely on the nerve that carries sound and balance information from the inner ear to the brain. Symptoms usually appear between ages 25 and 30. This rare type of neurofibromatosis usually affects people after age 20.
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