Hi all, I'm new to the forum and have a 4 yr old son who was diagnosed with high functioning autism. Just recently I read about NF, and made the connection with my son having a cafe au lait spot about 2 inches long/ 1 inch wide, just above his collar bone. He also has freckles in his arm pit and in the groin area which I heard also may indicate NF. He also has a large port stain on his lower back (don't know if that counts). His neurologist will not order the genetic test unless he has 3 or more cafe spots and an MRI is problematic since he had a very extreme reaction to the MRI sedation when we tried it. Also, a recent lab test showed high VMA (7x normal value) which I heard is linked to benign tumors. Is it rare to have only one large cafe spot/ with the freckling and have NF? Can more spots develop as he ages? Should I wait and see or should I push to get him checked? Ds has low tone and motor incoordination and I'm so worried that its more than autism - like something physically affecting him. Any one else have a child on the spectrum/SPD/APD with NF? If so can you recommend how I can get a diagnosis?