LETTERS TO THE EDITOR Posted in: Letters to the Editor The month of May is National Neurofibromatosis (NF) Awareness Month. NF is a genetic disorder that causes tumors to grow on nerve tissues. They can grow anywhere in your nervous system, including on your brain and spinal cord. It can also cause optic glioma, and Lisch nodules, bone deformities, learning disabilities,PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today!