This chart was especially helpful for me - for sorting my traits into categories, because I don’t fit well into any single one. It explains how I was able to fly under the radar for over 30 years: by compensating each with the other two, at the cost of permanent stress and anxiety.
The extremely short version of my story is: Too good grades to be considered ADHD. Too much executive dysfunction to fulfill the expectations placed upon me for scoring high on intelligence tests. Too impulsive and thrillseeking to be considered Autistic.
They thought I was gifted a when I was in school, they even tested me and it came out negative… but everyone forgot to test me for ADHD…