Development of personality disorder at the earliest?
Personality disorders are usually not diagnosed until adulthood, but what is the earliest age at which one can develop, which is then either not yet diagnosed or is still in the developmental phase?
I have also seen that underages from 12 have received this diagnosis.
As a rule, it is only diagnosed at 18.
If this is diagnosed with minors, it should usually be a strong expression of the symptoms
Here you can find: https://de.wikipedia.org/wiki/Pers%C3%B6nlichkeitsst%C3%B6rung