If you give amphetamines to a hyperactive child that doesn't have ADHD, then you'll just make them more hyper.
It's not a doping medication that makes people zone out, it's fucking amphetamines.
People afflicted with ADHD have an impaired uptake of dopamine in the brain, specifically the frontal cortex which controls executive skills (ie. focus & organisation). This leads the brain to crave the dopamine it needs to function, which externally presents itself as stimuli seeking behaviour and increased physical activity, hyperactivity.
Now give amphetamines to someone with this condition, and they'll find it easier to maintain focus without having to find external stimuli.
Give amphetamines/speed to someone who has a healthy dopamine uptake, and it'll likely shoot their energy levels through the roof & make them restless.
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Now, I apologise in advance for the rant that's about to follow, but this topic touches a very personal nerve.
I'm tired to FUCK of armchair psychiatrists spreading their poorly informed bullshit about what they think ADHD is. This rhetoric stops people taking the condition seriously & makes parents distrust medical professionals. You are harming people!
I was diagnosed & put on Ritalin at an early age, but due to know-it-alls filling my family's head with this shit for years, we decided to ignore the professional medical practitioners' advice & cut the medication in my early teens. In hindsight, I can now see how damaging that was.
I've always been a well-studied & driven person, but my time management & related executive skills are a big Achilles heel. I didn't manage to complete university & whilst very technically able, my unreliability in managing long term projects really kneecapped me professionally. It nearly cost me a marriage.
I've now been back on meds for the best part of a decade, & it's been life changing. My life is organised (relatively), I've founded 2 successful tech businesses, I finally got myself through uni, I salvaged my marriage, & now I have an amazing son.
Now, I forgive you, misinformed internet armchair people. But please, for the love of all, stop mischaracterising what you don't understand & undermining trained medical professionals. You are harming people!