Neurofibromatosis Type 1 (NF-1 or Von Recklinghausen disease) is an autosomal dominant genetic disease, characterized by an extreme variability of its clinical expression which is also found in the same family. Our work focuses on the exploitation of four cases of patients with NF-1 who were enrolled in the paediatric neurology consultation at Rabat Children's Hospital. They are two infants and two children. Otherwise the diagnosis was made in front of the existence of café au lait and lentiginous spots in two boys, also the existence of café au lait spots and abnormalities in brain imaging in two girls. Thus an evolution was marked by a favorable outcome for three patients and neurological sequelae in one patient.

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