| 1) Six or more café-au-lait macules (>0 - 5 cm at largest diameter in a prepubertal child or >1 - 5 cm in post-pubertal individuals) |
| 2) Axillary freckling or freckling in inguinal regions |
| 3) Two or more neurofibromas of any type or one or more plexiform neurfibromas |
| 4) Two or more Lish nodules (iris harmatomas) |
| 5) A distinctive osseous lesion (sphenoid wing dysplasia, lon-bone dysplasia) |
| 6) An optic pathway glioma |
| 7) A first degree relative with neurofibromatosis type 1 diagnosed by the above criteria |