How Does Jeanette Compare ADHD and Autism?

Jeanette, host of Excuse My ADHD, says a Facebook post is what made her skip the textbook definition. Someone was annoyed that people compare ADHD with autism, because they did not think ADHD was impairing at all. Jeanette agrees that autism can be much more impairing, depending on where a person sits on the spectrum. Her objection is the picture of ADHD that comparison usually leaves behind: a boy in class who cannot sit still. She could sit still and read for hours. She says the DSM lists on the order of 90 ADHD symptoms, and hyperfocus was the one nobody had described to her.