Do you include those who lost it completely as soon as Tobi turned out to be Obito or the ones who went bananas after pairing were finalized? Then list is long and some never recovered since.
Not really. It's very rare in adolescence. Onset of schizophrenia is around 20 for men. I've seen people as late as 40s have a psychotic break;however. I've seen psychosis with adolescence when accompanied by severe PTSD, but that's totally different.