Perhaps the neuropsychologist should review the
common clinical manifestations of migraine, which can include confusion and problems with vision, speech and language, not to mention nausea and sensitivity to light and sound, all of which will obviously impair performance on IQ and achievement tests.
I'd ask for my money back.
ETA: If you are looking for reasons to ignore the results of the testing that was given when your son had a migraine, I think you have plenty.
If you need valid recent testing results to get access to programming or services for your son, I'd find a different neuropysch, and explain the migraine issues ahead of time to be sure that the doctor would be flexible with scheduling testing and would stop as soon as a migraine or aura became evident.
