I remember trying to pin ADHD as a "North American affliction" and after doing some research (read: google wink ) was disheartened to see that it really does exist in most countries.

(I guess I thought that if I could isolate it to North America that would have meant that it was more environmental than biological and therefor easy to change).

I did read somewhere that it's more prevalent on the east coast, but that could just be a reflection of population? Not sure.