Neurodiversity is a concept that’s been around for a while. In a nutshell, it means that brain differences are just that: differences. So conditions like ADHD and autism aren’t “abnormal.” They’re simply variations of the human brain (Rosen).
Most neurodivergent people, once aware of this concept, typically agree with it. At least, from what I have seen in activist circles. Someone who falls under the neurodiverse umbrella, can be called neurodiverse or neurodivergent. Neurodivergent is simply a way of saying that someone strays away from the expected mental norm in regards to the way their brain functions.
This way of looking at conditions that have to do with brain function fall under the belief that in general, people are disabled not because of the condition of their body, but because of the way society treats those with their physical or mental differences. The barrier of disability is not the differences one has in their body or mind, but the way that society treats these differences and how society can cripple someone by not allowing for these differences.
Sources
Rosen, Peg. “Neurodiversity: What You Need to Know.” Understood.org, Understood, 17 Apr. 2020, www.understood.org/en/friends-feelings/empowering-your-child/building-on-strengths/neurodiversity-what-you-need-to-know.