>>210
It's not a disorder, this is like writing a post about Trump Derangement Syndrome, it's just an expression about a feeling of inadequacy. (I also think you're confusing this with the "gifted kid burnout" fad that was talked about a few years ago). Anyway a more charitable explanation is that it's a response to social pressures that the person didn't experience before, like, say, a programmer who was self taught for a decade suddenly feeling out of place taking college level courses in a building where they are graded and amongst peers.