Gosh! well well well, at last an article that explains it well. Have had this issue with both sons and it is hard to diagnose when other learning difficulties are present also which is usually the case. I listened to years of "he'll grow out of it or he's lazy, not trying hard enough" blah blah blah. These difficulties are real and I think when a child is 17 and had tonnes of learning support it's time to say "no he won't grow out of it" accommodations are the only way to go to give kids like that a fair chance in exams.