If Wikipedia can be trusted to give me the right symptoms for both, then Schizophrenia could be right as sufferers can hear voices. I wanted him to hear voices that sometimes scared him, making him shy and anti-social and very easily spooked. But sometimes listening to the voices would give him confidence in his magic to cause harm to others.
Ok, yeah. That description fits a little better. I was going with the "shy & timid to confident & evil".
