A national, multicenter, randomized, transverse clinical trial, estimating the existence of phonological deficits in children with NF1 children compared with control children without NF1 with the same reading level.

To determine the phonological and visio -spatial performances at the NF1 children.

Inclusion Criteria:

• Age included between 8 and 12 years

• Child presenting a type 1 neurofibromatosis according to 2 criteria in the following criteria list :

  • At least 6 café au lait spots
  • 2 or more neurofibromas or 1 plexiform neurofibroma
  • axillary or inguinal freckling
  • 1 optic nerf glioma
  • 2 or more Lisch nodules
  • 1 osseous lesion as sphenoid dysplasia or thinning of the long bone cortex with or without pseudoarthrosis
  • 1 A first degree relative (parent, sibling, or offspring) with NF1 by the above criteria

• Membership in a national insurance

• Consent of the child and the parents

Exclusion Criteria:

• Mental retardation (QI T < 70)
• Treated or untreated epilepsy
• Visual deficit (visual Acuteness < 4/10
• Presence of a symptomatic optic glioma
• Presence of a brain tumor.