My son called MEPS and told them that he had misinterpreted instructions from his recruiter and that, on reflection, he needed to correct the record. He will be working with this office until he leaves for basic, which appears to be 8-11 months down the road, so he told them that the recruiter said "not to mention" that he had been diagnosed with ADD and it wouldn't come up unless he brought it up. MEPS told him to make an appointment with the recruiters office and fix the forms there, since it's all digital now. In the time that it took him to look up the number and call, MEPS had already spoken with the officer in charge at the recruiters office and they were expecting his call. He had to sign a hand written explanation of events and correct his answers on his application. Apparently the senior recruiter was instructed to council my son's recruiter on the subject of being more explicit in his directions to recruits. I got the sense that everyone involved knew exactly what happened but the recruiters office gets to save face. Everyone is now busy collecting medical records and HIPA releases from pediatricians, doctors, and schools.
I hope this doesn't impact his getting into Nuke School. He already needs a waiver for his age (25). He has been off of any medication for more than five years with no issues with employers or school (local community college). The only problem is he took adderal for more than "24 cumulative months after the age of 14". That was during a time when in the eyes of some "educators" every male child with an IQ above 130 needed to be medicated.
The good news is they didn't arrest him, and they are moving forward on his waivers.
Thanks to everyone for your advice and insights.