Thank you for posting your query at DoctorSpring.
These lesions as you described most likely care cafe au lait macules, which are commonly seen in patients with neurofibromatosis. But for them to be significant, they should be at least six or more in number.
In addition, there should be other skin lesions, such as neurofibromas (small tumors under the skin arising from the nerve), axillary freckling, etc. Also, there should be seizures, mental retardation, optic nerve tumors, etc.
So, I do not think your child has neurofibromatosis at this moment, and there is no need to worry.
Dr Sudhir Kumar MD DM (Neurology)