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The difference is a person with ADHD will be calmed by a stimulant rather than amped up by it. The ADHD brain can't focus because it doesn't produce enough dopamine to reward the neural circuits for maintaining focus. So there's this paradoxical effect where something that in typical brains would lead to hyperactivity leads to calmness and clarity in an ADHD brain. It's qualitatively different.

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this is the classical DSM-V answer you hear thrown around but honestly times are changing, our understanding of this disorder is changing, and I do not think that is unequivocally true.

I don't think the way you've phrased it can possibly be true. I would assume whether you have ADHD or not an amphetamine is going to raise your heart rate.

Not at ADHD clinical doses.

And not all ADHD meds are stimulants.

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