It took me thirty years to find the word
for the fact that my brain works differently.

The word comes from an older idea: neurodiversity. The Australian sociologist Judy Singer popularized the concept in the late 1990s, first in relation to autism. The starting point is simple: human brains vary, the way bodies vary, and that variation is not in itself an illness to be corrected. It exists, full stop.

It is a way of putting a common frame over profiles that, from a distance, do not have much in common. An ADHD brain and an autistic brain do not work the same way. But the two share one thing: they do not fit the mould that school, work, and social life were designed around. And that creates experiences that resemble each other, even when the causes are different.

One thing right away, because it gets forgotten often: neurodivergent does not mean "special" or "superior". It means "different from the average". Nothing more. The rest, the strengths, the difficulties, depends on the profile, the person, and the context.

These words come up everywhere and get mixed together often. Here is how I use them.

Neurodiversity

The idea, and the movement behind it. Neurodiversity is the fact that human brains naturally vary. It is a concept about a population, not a label for one person. You do not "have" neurodiversity, the same way you do not "have" biodiversity.

Neurotypical

A brain that works within the range society expects. Someone for whom sitting still in class, following a long instruction, managing time, or filtering out noise does not take a particular effort. It is not "better". It is just the format the system was built for.

Neurodivergent

A brain that departs from that range. It is the broad term, the one I use on this site. It does not imply a precise diagnosis: you can feel neurodivergent before you even know which profile it is. The word comes from disability advocacy and its usage is not fixed, so I would not fight over the fine print.

The point to keep: these words locate a way of functioning relative to an average. They do not say whether you are doing well or badly. They do not say whether you need help. They just say where you sit on a map, which is already useful when you have spent your life thinking you were the only one of your kind.

There is no official list, but here are the profiles most often placed under the term, and the ones I cover on this site.

ADHD

Attention-deficit/hyperactivity disorder, a neurodevelopmental condition of regulation. Attention, motivation, the sense of time, and starting tasks all work differently. It is the profile I know best, because it is mine. I cover it in depth on the adult ADHD page.

Giftedness

A faster, more connected cognitive style, measured by an IQ above the norm. It is not "being smart" in the everyday sense, it is a mode of processing information. Detailed on the giftedness page.

Hypersensitivity

A sensory and emotional perception more intense than average. It is not a medical diagnosis but a trait, affecting 15 to 20% of the population. See the hypersensitivity page.

Autism and the dys conditions

Autism (ASD) and the dys conditions (dyslexia, dyspraxia, dyscalculia) are also part of the neurodivergence spectrum. I do not cover them in depth on this site, because I have no direct experience with them and I would rather write about what I know. But they fully belong in the picture.

An honest note: these profiles are not sealed boxes. You can carry several at once, and it is in fact common. That is the whole subject of twice-exceptionality.

If you read about ADHD, you quickly run into giftedness. If you read about giftedness, you run into hypersensitivity. This is not a keyword coincidence. These profiles genuinely overlap, for two reasons.

The first is co-occurrence. Having one neurodivergent profile raises the probability of having another. The research on ADHD shows it clearly: comorbidities are the rule, not the exception. Many people with ADHD also have anxiety, mood difficulties, sensory particularities. The profiles do not exclude each other, they stack.

The second is that from the outside, these profiles produce experiences that resemble each other. The feeling of being out of step. The fatigue of having to compensate. The sense that simple things cost more. Someone gifted and someone with ADHD can describe their exhaustion after a dinner with the same words, even though what happened in their heads was different. That is what I explore on the intellectual vs emotional giftedness page.

That is why an umbrella term is useful. It keeps you from getting lost in the question "but which one exactly is it?" and lets you look at what is shared: a brain that does not fit the mould, and everything that follows from that.

This is the most delicate question, and I will try to answer it without dodging.

On one side, neurodivergence is not an illness. It is a variation. A neurodivergent brain is not a broken brain that needs fixing so it resembles the others. That idea, inherited from the neurodiversity movement, did me good when I met it, because it pulled me out of the register of "a defect to correct".

On the other side, I am not going to tell you it is all a pretty difference. Some profiles involve real difficulties. Untreated ADHD has a real cost on life, work, relationships. Saying "it is not a disorder, just a difference" can become a way of minimizing what people actually live. I do not like that either.

My position, after reading a lot and living a lot: neurodivergence is a difference in functioning, which becomes a disability when the environment is not adapted, and which stays a baseline difficulty for some profiles even in a good environment. Both things are true at once. The word "neurodivergent" describes where you sit. It does not decide, for you, whether you need help.

If you recognize yourself in all this, the logical next step is to identify which profile it is. You can start with the seven-question quiz, which is not a diagnosis but a starting point. And above all, talk to a professional: not because I have to say it, but because they know you and I do not.