Kippy6,
More than 6 large cafe au lait (not birthmarks, not chloasma of preganacy, not sun related) are considered the signs of NF1, not NF2. This is an entirely different condition with different genetics and presentation. Both NF1 and NF2 can present with CNS tumors, including AN but NF2 is bilateral AN, rarer than NF1 and generally there is more morbidity and mortality associated with it.
NF1 can be associated with speech delay and certain, very specific learning disabilities which, when I checked last, can be treated with medication that, believe it or not, lowers your cholesterol. I am not talking here the psychiatric stuff. The treatment of NF1 is much more advanced than NF2; there is a lot more known and there is a mouse model of NF1. Unfortunately, there are still pediatricians out there who don't know anything about NF1 or NF2. If this were my child, I would take him/her to a NEUROFIBROMATOSIS CLINIC in a large teaching hospital because they can diagnose, treat and follow the disease properly. If it is not neurofibramotosis but is something else, genetic testing as well these peoples' expertise can show that.
Hope everything works out for you and your friend.
Eve