Not to be pedantic, but just because symptoms are masked does not mean they are/were not present. I think the differentiator is whether one had symptoms to mask

Not to be pedantic, but just because symptoms are masked does not mean they are/were not present. I think the differentiator is whether one had symptoms to mask or not in the first place. I masked some of my symptoms as a child, was diagnosed as an adult, etc., but the symptoms were always there despite my prior ability to function around them.