Definition: Neurofibromatosis (NF) refers to a group of three distinct genetic conditions in which tumors grow in the nervous system. The tumors are non-cancerous (benign) and often involve the skin or surrounding bone. Although symptoms are often mild, each condition presents differently. Symptom' include at least two growths on the eye's iris.

Category: other condition

Credit: Wikipedia

Source: https://en.wikipedia.org/wiki/Neurofibromatosis