Neurofibromatosis Type 1 (NF1) is characterized by multiple cafe-au-lait spots and neurofibromas on or under the skin.
Neurofibromatosis Type 2 (NF2) is characterized by multiple tumours of the spine and brain.
Neurofibromatosis has been classified into two distinct types : NF1, NF2, They are caused by different genes, and located on different chromosomes !!!