It's a growing market, although it might be because of shifting goal posts. I had a friend whose son was placed in French immersion (a language he doesn't speak at all). From what I was understanding, he was getting up and walking around in kindergarten and was labelled as mentally divergent; his teachers apparently suggested to his mother that he see a doctor.

(Strangely these "mental illnesses" and school problems went away after he switched to an English language school, must be a miracle)

I assume the loneliness epidemic is producing similar cases.