School said I was smart
but not trying hard enough.

Twice-exceptionality is when you are both gifted and neurodivergent. In my case, high IQ and ADHD. It can also be giftedness and autism, giftedness and dyslexia, or other combinations.

The specific problem with this combination is masking. Being gifted gives you enough cognitive resources to compensate for the difficulties that come with ADHD. You develop strategies without even realising it. You memorise instead of taking notes. You improvise instead of preparing. You understand quickly, so you can keep up even when your attention drops out every five minutes.

From the outside, it looks like an "average" or "inconsistent" student. Excellent grades in the subjects that interest you, terrible in the rest. Flashes of brilliance followed by periods where nothing comes out. Teachers see a motivation problem. Parents see laziness. Nobody sees that the brain is running at full capacity just to maintain a surface of normality.

The cost of that compensation is enormous. It often cracks in adulthood. When the demands exceed what compensatory strategies can handle. A new job with more responsibility. A long project with no intermediate deadline. That is when many people discover there was something else under the giftedness.

A typical ADHD child gets noticed. They move, they disrupt, they cannot sit still. But an ADHD child who is also gifted often disrupts nobody. They daydream but give the right answer when called on. They skip homework but still pass because of what they absorbed in class. They compensate.

Girls are even more underdiagnosed. Inattentive ADHD without visible hyperactivity, combined with giftedness, produces a quiet, dreamy student who "could do better." Not the profile that triggers an alert with teachers.

The result: a lot of gifted adults with ADHD discover their ADHD at the same time as a crisis. Burnout, depression, a relationship falling apart. It is often the first real failure of compensation that leads to seeing someone.

Being gifted as an adult is not just "being smart." It is a different cognitive wiring. It means processing information faster and in greater volume. It means seeing connections that others miss. It also means getting bored faster, needing intellectual stimulation to feel alive, and often feeling out of step with the people around you.

The topic of giftedness has been co-opted by pop psychology and social media in recent years. "I am highly sensitive so I am probably gifted." That has made the subject slightly toxic. A lot of serious people avoid talking about it for fear of being lumped in with that trend. I get it. But it does not change how the brain actually works.

What I experience daily as a gifted adult: a constant need to understand the why behind things. A difficulty tolerating boredom that goes beyond simple impatience. A tendency toward branching thought, where one idea calls up ten others, which makes linear conversation sometimes hard. And a recurring sense of being out of sync, not superior, just different.

Combined with ADHD, it produces a brain that moves very fast but in every direction at once. It is stimulating. It is also exhausting.

Books. "Misdiagnosis and Dual Diagnoses of Gifted Children and Adults" by Webb et al. is excellent on twice-exceptionality. For a French perspective, Jeanne Siaud-Facchin's work is a decent introduction despite its limits. In English, the research-backed literature is more developed.

Professionals. If you are looking for an assessment, a neuropsychologist can administer the WAIS-IV (the adult IQ test). For ADHD alongside it, you want a psychiatrist trained in adult ADHD. Ideally, find someone who knows both subjects. It is rare, but it saves you from having to explain everything twice.