I got my diagnosis under a year ago, and the way I've intellectualised it to myself is:

I'm in the top 5-10% for scatterbrained-ness or enthusiasm, or bottom 5-10% for working memory or personal project completion.

That's it. If I was among the 5-10% shortest people, I wouldn't have a "height deficit disorder", but learning some tricks would be helpful, there are tools (or in our case meds) to help, and I'd possibly need accommodations sometimes. Ideally the world would work on universal design principles and include the extremes, but unfortunately it isn't so. Same principle applies.